diff --git a/Gemfile b/Gemfile
index 7577cb5f2..8a86bfb71 100644
--- a/Gemfile
+++ b/Gemfile
@@ -71,6 +71,9 @@ gem 'tinymce-rails', '~> 4.6.4' # Rich text editor
 
 gem 'base62' # Used for smart annotations
 gem 'newrelic_rpm'
+gem 'devise_security_extension',
+    git: 'https://github.com/phatworx/devise_security_extension.git',
+    ref: 'b2ee978'
 
 group :development, :test do
   gem 'listen', '~> 3.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 418ded2c5..0ae455d1b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,6 +12,15 @@ GIT
     sneaky-save (0.1.2)
       activerecord (>= 3.2.0)
 
+GIT
+  remote: https://github.com/phatworx/devise_security_extension.git
+  revision: b2ee978af7d49f0fb0e7271c6ac074dfb4d39353
+  ref: b2ee978
+  specs:
+    devise_security_extension (0.10.0)
+      devise (>= 3.0.0, < 5.0)
+      railties (>= 3.2.6, < 6.0)
+
 GEM
   remote: http://rubygems.org/
   specs:
@@ -386,6 +395,7 @@ DEPENDENCIES
   devise (~> 4.3.0)
   devise-async
   devise_invitable
+  devise_security_extension!
   faker
   figaro
   font-awesome-rails (~> 4.7.0.2)
diff --git a/app/controllers/users/invitations_controller.rb b/app/controllers/users/invitations_controller.rb
index 21cf02977..bd199cd7a 100644
--- a/app/controllers/users/invitations_controller.rb
+++ b/app/controllers/users/invitations_controller.rb
@@ -7,7 +7,7 @@ module Users
 
     before_action :check_invite_users_permission, only: :invite_users
 
-    before_filter :update_sanitized_params, only: :update
+    before_action :update_sanitized_params, only: :update
 
     def update
       # Instantialize a new team with the provided name
diff --git a/db/migrate/20150713060702_devise_create_users.rb b/db/migrate/20150713060702_devise_create_users.rb
index 15f651d46..470826e79 100644
--- a/db/migrate/20150713060702_devise_create_users.rb
+++ b/db/migrate/20150713060702_devise_create_users.rb
@@ -1,4 +1,4 @@
-class DeviseCreateUsers < ActiveRecord::Migration
+class DeviseCreateUsers < ActiveRecord::Migration[4.2]
   def change
     create_table(:users) do |t|
       ## General user data
diff --git a/db/migrate/20150713061603_add_user_columns.rb b/db/migrate/20150713061603_add_user_columns.rb
index 54153ea3d..0d37c1a2d 100644
--- a/db/migrate/20150713061603_add_user_columns.rb
+++ b/db/migrate/20150713061603_add_user_columns.rb
@@ -1,4 +1,4 @@
-class AddUserColumns < ActiveRecord::Migration
+class AddUserColumns < ActiveRecord::Migration[4.2]
   def up
     add_attachment :users, :avatar
   end
diff --git a/db/migrate/20150713063224_create_organizations.rb b/db/migrate/20150713063224_create_organizations.rb
index b68bc47f9..84ec93e61 100644
--- a/db/migrate/20150713063224_create_organizations.rb
+++ b/db/migrate/20150713063224_create_organizations.rb
@@ -1,4 +1,4 @@
-class CreateOrganizations < ActiveRecord::Migration
+class CreateOrganizations < ActiveRecord::Migration[4.2]
   def change
     create_table :teams do |t|
       ## General info
diff --git a/db/migrate/20150713070738_create_user_organizations.rb b/db/migrate/20150713070738_create_user_organizations.rb
index 298a9141f..04dc7b3ea 100644
--- a/db/migrate/20150713070738_create_user_organizations.rb
+++ b/db/migrate/20150713070738_create_user_organizations.rb
@@ -1,4 +1,4 @@
-class CreateUserOrganizations < ActiveRecord::Migration
+class CreateUserOrganizations < ActiveRecord::Migration[4.2]
   def change
     create_table :user_teams do |t|
       t.column :role, :integer, null: false, default: 1
diff --git a/db/migrate/20150713071921_create_projects.rb b/db/migrate/20150713071921_create_projects.rb
index 3ce88c6b4..acfb2f2af 100644
--- a/db/migrate/20150713071921_create_projects.rb
+++ b/db/migrate/20150713071921_create_projects.rb
@@ -1,4 +1,4 @@
-class CreateProjects < ActiveRecord::Migration
+class CreateProjects < ActiveRecord::Migration[4.2]
   def change
     create_table :projects do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150713072417_create_user_projects.rb b/db/migrate/20150713072417_create_user_projects.rb
index c7ecfa696..4823b2520 100644
--- a/db/migrate/20150713072417_create_user_projects.rb
+++ b/db/migrate/20150713072417_create_user_projects.rb
@@ -1,4 +1,4 @@
-class CreateUserProjects < ActiveRecord::Migration
+class CreateUserProjects < ActiveRecord::Migration[4.2]
   def change
     create_table :user_projects do |t|
       t.column :role, :integer, default: 0
diff --git a/db/migrate/20150714125221_add_archive_to_projects.rb b/db/migrate/20150714125221_add_archive_to_projects.rb
index f8e4e9c52..e79e7e3f2 100644
--- a/db/migrate/20150714125221_add_archive_to_projects.rb
+++ b/db/migrate/20150714125221_add_archive_to_projects.rb
@@ -1,4 +1,4 @@
-class AddArchiveToProjects < ActiveRecord::Migration
+class AddArchiveToProjects < ActiveRecord::Migration[4.2]
   def change
     add_column :projects, :archived, :boolean, { default: false, null: false }
     add_column :projects, :archived_on, :datetime
diff --git a/db/migrate/20150715122019_create_logs.rb b/db/migrate/20150715122019_create_logs.rb
index 6c0359628..7d6b6c867 100644
--- a/db/migrate/20150715122019_create_logs.rb
+++ b/db/migrate/20150715122019_create_logs.rb
@@ -1,4 +1,4 @@
-class CreateLogs < ActiveRecord::Migration
+class CreateLogs < ActiveRecord::Migration[4.2]
   def change
     create_table :logs do |t|
       t.integer :team_id, null: false
diff --git a/db/migrate/20150715124934_create_my_modules.rb b/db/migrate/20150715124934_create_my_modules.rb
index fb231234d..0e04e8c48 100644
--- a/db/migrate/20150715124934_create_my_modules.rb
+++ b/db/migrate/20150715124934_create_my_modules.rb
@@ -1,4 +1,4 @@
-class CreateMyModules < ActiveRecord::Migration
+class CreateMyModules < ActiveRecord::Migration[4.2]
   def change
     create_table :my_modules do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150715131400_create_project_comments.rb b/db/migrate/20150715131400_create_project_comments.rb
index fc4cf9e26..e1b21c984 100644
--- a/db/migrate/20150715131400_create_project_comments.rb
+++ b/db/migrate/20150715131400_create_project_comments.rb
@@ -1,4 +1,4 @@
-class CreateProjectComments < ActiveRecord::Migration
+class CreateProjectComments < ActiveRecord::Migration[4.2]
   def change
     create_table :project_comments do |t|
       t.integer :project_id, null: false
diff --git a/db/migrate/20150715132459_create_my_module_comments.rb b/db/migrate/20150715132459_create_my_module_comments.rb
index fe6f34946..002a294a1 100644
--- a/db/migrate/20150715132459_create_my_module_comments.rb
+++ b/db/migrate/20150715132459_create_my_module_comments.rb
@@ -1,4 +1,4 @@
-class CreateMyModuleComments < ActiveRecord::Migration
+class CreateMyModuleComments < ActiveRecord::Migration[4.2]
   def change
     create_table :my_module_comments do |t|
       t.integer :my_module_id, null: false
diff --git a/db/migrate/20150715132920_create_tags.rb b/db/migrate/20150715132920_create_tags.rb
index df4785d76..7ee44f5d3 100644
--- a/db/migrate/20150715132920_create_tags.rb
+++ b/db/migrate/20150715132920_create_tags.rb
@@ -1,4 +1,4 @@
-class CreateTags < ActiveRecord::Migration
+class CreateTags < ActiveRecord::Migration[4.2]
   def change
     create_table :tags do |t|
       t.string :name, null:false
diff --git a/db/migrate/20150715133511_create_my_modules_and_tags.rb b/db/migrate/20150715133511_create_my_modules_and_tags.rb
index dd916ca4d..15dcdfbdf 100644
--- a/db/migrate/20150715133511_create_my_modules_and_tags.rb
+++ b/db/migrate/20150715133511_create_my_modules_and_tags.rb
@@ -1,4 +1,4 @@
-class CreateMyModulesAndTags < ActiveRecord::Migration
+class CreateMyModulesAndTags < ActiveRecord::Migration[4.2]
   def change
     create_table :my_module_tags do |t|
       t.belongs_to :my_module, index: true
diff --git a/db/migrate/20150715133709_create_my_module_groups.rb b/db/migrate/20150715133709_create_my_module_groups.rb
index 37ad4c2af..35f469a81 100644
--- a/db/migrate/20150715133709_create_my_module_groups.rb
+++ b/db/migrate/20150715133709_create_my_module_groups.rb
@@ -1,4 +1,4 @@
-class CreateMyModuleGroups < ActiveRecord::Migration
+class CreateMyModuleGroups < ActiveRecord::Migration[4.2]
   def change
     create_table :my_module_groups do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150715134133_create_connections.rb b/db/migrate/20150715134133_create_connections.rb
index 819cdc410..94638539d 100644
--- a/db/migrate/20150715134133_create_connections.rb
+++ b/db/migrate/20150715134133_create_connections.rb
@@ -1,4 +1,4 @@
-class CreateConnections < ActiveRecord::Migration
+class CreateConnections < ActiveRecord::Migration[4.2]
   def change
     create_table :connections do |t|
       t.integer :input_id, null: false
diff --git a/db/migrate/20150715135452_create_steps.rb b/db/migrate/20150715135452_create_steps.rb
index 312cc5e9e..ba73c24da 100644
--- a/db/migrate/20150715135452_create_steps.rb
+++ b/db/migrate/20150715135452_create_steps.rb
@@ -1,4 +1,4 @@
-class CreateSteps < ActiveRecord::Migration
+class CreateSteps < ActiveRecord::Migration[4.2]
   def change
     create_table :steps do |t|
       t.string :name
diff --git a/db/migrate/20150715141810_create_assets.rb b/db/migrate/20150715141810_create_assets.rb
index 63e0f5604..f51df23de 100644
--- a/db/migrate/20150715141810_create_assets.rb
+++ b/db/migrate/20150715141810_create_assets.rb
@@ -1,4 +1,4 @@
-class CreateAssets < ActiveRecord::Migration
+class CreateAssets < ActiveRecord::Migration[4.2]
   def change
     create_table :assets do |t|
 
diff --git a/db/migrate/20150715142704_create_step_assets.rb b/db/migrate/20150715142704_create_step_assets.rb
index 7e711cb45..d7da480aa 100644
--- a/db/migrate/20150715142704_create_step_assets.rb
+++ b/db/migrate/20150715142704_create_step_assets.rb
@@ -1,4 +1,4 @@
-class CreateStepAssets < ActiveRecord::Migration
+class CreateStepAssets < ActiveRecord::Migration[4.2]
   def change
     create_table :step_assets do |t|
       t.integer :step_id, null: false
diff --git a/db/migrate/20150715142929_create_result_assets.rb b/db/migrate/20150715142929_create_result_assets.rb
index 661073237..268a287d7 100644
--- a/db/migrate/20150715142929_create_result_assets.rb
+++ b/db/migrate/20150715142929_create_result_assets.rb
@@ -1,4 +1,4 @@
-class CreateResultAssets < ActiveRecord::Migration
+class CreateResultAssets < ActiveRecord::Migration[4.2]
   def change
     create_table :result_assets do |t|
       t.integer :result_id, null: false
diff --git a/db/migrate/20150715143134_create_results.rb b/db/migrate/20150715143134_create_results.rb
index 4f7bce5d5..a61c98f81 100644
--- a/db/migrate/20150715143134_create_results.rb
+++ b/db/migrate/20150715143134_create_results.rb
@@ -1,4 +1,4 @@
-class CreateResults < ActiveRecord::Migration
+class CreateResults < ActiveRecord::Migration[4.2]
   def change
     create_table :results do |t|
       t.string :name
diff --git a/db/migrate/20150716060140_create_result_comments.rb b/db/migrate/20150716060140_create_result_comments.rb
index 4aae1aadc..cab91468e 100644
--- a/db/migrate/20150716060140_create_result_comments.rb
+++ b/db/migrate/20150716060140_create_result_comments.rb
@@ -1,4 +1,4 @@
-class CreateResultComments < ActiveRecord::Migration
+class CreateResultComments < ActiveRecord::Migration[4.2]
   def change
     create_table :result_comments do |t|
       t.integer :result_id, null: false
diff --git a/db/migrate/20150716061004_create_comments.rb b/db/migrate/20150716061004_create_comments.rb
index 79d333cf0..8028a8bf1 100644
--- a/db/migrate/20150716061004_create_comments.rb
+++ b/db/migrate/20150716061004_create_comments.rb
@@ -1,4 +1,4 @@
-class CreateComments < ActiveRecord::Migration
+class CreateComments < ActiveRecord::Migration[4.2]
   def change
     create_table :comments do |t|
       t.string :message, null: false
diff --git a/db/migrate/20150716061555_create_step_comments.rb b/db/migrate/20150716061555_create_step_comments.rb
index 824ef7f20..4e7bce7a0 100644
--- a/db/migrate/20150716061555_create_step_comments.rb
+++ b/db/migrate/20150716061555_create_step_comments.rb
@@ -1,4 +1,4 @@
-class CreateStepComments < ActiveRecord::Migration
+class CreateStepComments < ActiveRecord::Migration[4.2]
   def change
     create_table :step_comments do |t|
       t.integer :step_id, null: false
diff --git a/db/migrate/20150716061937_create_tables.rb b/db/migrate/20150716061937_create_tables.rb
index 86a96f6bd..ad9abefa6 100644
--- a/db/migrate/20150716061937_create_tables.rb
+++ b/db/migrate/20150716061937_create_tables.rb
@@ -1,4 +1,4 @@
-class CreateTables < ActiveRecord::Migration
+class CreateTables < ActiveRecord::Migration[4.2]
   def change
     create_table :tables do |t|
       t.binary :contents, null: false, limit: 20.megabyte
diff --git a/db/migrate/20150716062013_create_checklists.rb b/db/migrate/20150716062013_create_checklists.rb
index 60c3180f8..382b9ece1 100644
--- a/db/migrate/20150716062013_create_checklists.rb
+++ b/db/migrate/20150716062013_create_checklists.rb
@@ -1,4 +1,4 @@
-class CreateChecklists < ActiveRecord::Migration
+class CreateChecklists < ActiveRecord::Migration[4.2]
   def change
     create_table :checklists do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150716062110_create_checklist_items.rb b/db/migrate/20150716062110_create_checklist_items.rb
index 8a10eaae4..ec4c35069 100644
--- a/db/migrate/20150716062110_create_checklist_items.rb
+++ b/db/migrate/20150716062110_create_checklist_items.rb
@@ -1,4 +1,4 @@
-class CreateChecklistItems < ActiveRecord::Migration
+class CreateChecklistItems < ActiveRecord::Migration[4.2]
   def change
     create_table :checklist_items do |t|
       t.string :text, null: false
diff --git a/db/migrate/20150716062801_create_samples.rb b/db/migrate/20150716062801_create_samples.rb
index 0b824541e..24b21bb28 100644
--- a/db/migrate/20150716062801_create_samples.rb
+++ b/db/migrate/20150716062801_create_samples.rb
@@ -1,4 +1,4 @@
-class CreateSamples < ActiveRecord::Migration
+class CreateSamples < ActiveRecord::Migration[4.2]
   def change
     create_table :samples do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150716064453_create_activities.rb b/db/migrate/20150716064453_create_activities.rb
index 5573a349e..47da33ea5 100644
--- a/db/migrate/20150716064453_create_activities.rb
+++ b/db/migrate/20150716064453_create_activities.rb
@@ -1,4 +1,4 @@
-class CreateActivities < ActiveRecord::Migration
+class CreateActivities < ActiveRecord::Migration[4.2]
   def change
     create_table :activities do |t|
       t.integer :my_module_id, null: false
diff --git a/db/migrate/20150716120130_create_sample_my_modules.rb b/db/migrate/20150716120130_create_sample_my_modules.rb
index 3ed3555f7..3bef031b0 100644
--- a/db/migrate/20150716120130_create_sample_my_modules.rb
+++ b/db/migrate/20150716120130_create_sample_my_modules.rb
@@ -1,4 +1,4 @@
-class CreateSampleMyModules < ActiveRecord::Migration
+class CreateSampleMyModules < ActiveRecord::Migration[4.2]
   def change
     create_table :sample_my_modules do |t|
       t.integer :sample_id, null: false
diff --git a/db/migrate/20150716120659_create_sample_comments.rb b/db/migrate/20150716120659_create_sample_comments.rb
index 161413ff4..19d580668 100644
--- a/db/migrate/20150716120659_create_sample_comments.rb
+++ b/db/migrate/20150716120659_create_sample_comments.rb
@@ -1,4 +1,4 @@
-class CreateSampleComments < ActiveRecord::Migration
+class CreateSampleComments < ActiveRecord::Migration[4.2]
   def change
     create_table :sample_comments do |t|
       t.integer :sample_id, null: false
diff --git a/db/migrate/20150717084645_create_result_texts.rb b/db/migrate/20150717084645_create_result_texts.rb
index 7b566bf72..c1b13d867 100644
--- a/db/migrate/20150717084645_create_result_texts.rb
+++ b/db/migrate/20150717084645_create_result_texts.rb
@@ -1,4 +1,4 @@
-class CreateResultTexts < ActiveRecord::Migration
+class CreateResultTexts < ActiveRecord::Migration[4.2]
   def change
     create_table :result_texts do |t|
       t.string :text, null: false
diff --git a/db/migrate/20150717085043_create_step_tables.rb b/db/migrate/20150717085043_create_step_tables.rb
index 716f22a2c..c3f00ce07 100644
--- a/db/migrate/20150717085043_create_step_tables.rb
+++ b/db/migrate/20150717085043_create_step_tables.rb
@@ -1,4 +1,4 @@
-class CreateStepTables < ActiveRecord::Migration
+class CreateStepTables < ActiveRecord::Migration[4.2]
   def change
     create_table :step_tables do |t|
       t.integer :step_id, null: false
diff --git a/db/migrate/20150717085133_create_result_tables.rb b/db/migrate/20150717085133_create_result_tables.rb
index ab35abd78..f60e1144a 100644
--- a/db/migrate/20150717085133_create_result_tables.rb
+++ b/db/migrate/20150717085133_create_result_tables.rb
@@ -1,4 +1,4 @@
-class CreateResultTables < ActiveRecord::Migration
+class CreateResultTables < ActiveRecord::Migration[4.2]
   def change
     create_table :result_tables do |t|
       t.integer :result_id, null: false
diff --git a/db/migrate/20150722095027_create_user_my_modules.rb b/db/migrate/20150722095027_create_user_my_modules.rb
index e82912680..05fef3fec 100644
--- a/db/migrate/20150722095027_create_user_my_modules.rb
+++ b/db/migrate/20150722095027_create_user_my_modules.rb
@@ -1,4 +1,4 @@
-class CreateUserMyModules < ActiveRecord::Migration
+class CreateUserMyModules < ActiveRecord::Migration[4.2]
   def change
     create_table :user_my_modules do |t|
       t.integer :user_id, null: false
diff --git a/db/migrate/20150722112911_add_foreign_keys.rb b/db/migrate/20150722112911_add_foreign_keys.rb
index 02d96a385..8660eedc5 100644
--- a/db/migrate/20150722112911_add_foreign_keys.rb
+++ b/db/migrate/20150722112911_add_foreign_keys.rb
@@ -1,4 +1,4 @@
-class AddForeignKeys < ActiveRecord::Migration
+class AddForeignKeys < ActiveRecord::Migration[4.2]
   def change
     add_foreign_key :my_modules, :my_module_groups
     add_foreign_key :project_comments, :comments
diff --git a/db/migrate/20150723134648_add_confirmable_to_devise.rb b/db/migrate/20150723134648_add_confirmable_to_devise.rb
index b1f0d28b0..ed9b7f553 100644
--- a/db/migrate/20150723134648_add_confirmable_to_devise.rb
+++ b/db/migrate/20150723134648_add_confirmable_to_devise.rb
@@ -1,4 +1,4 @@
-class AddConfirmableToDevise < ActiveRecord::Migration
+class AddConfirmableToDevise < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :confirmation_token, :string
     add_column :users, :confirmed_at, :datetime
diff --git a/db/migrate/20150730090021_add_my_module_groups_to_project.rb b/db/migrate/20150730090021_add_my_module_groups_to_project.rb
index 7352a61df..92652df4e 100644
--- a/db/migrate/20150730090021_add_my_module_groups_to_project.rb
+++ b/db/migrate/20150730090021_add_my_module_groups_to_project.rb
@@ -1,4 +1,4 @@
-class AddMyModuleGroupsToProject < ActiveRecord::Migration
+class AddMyModuleGroupsToProject < ActiveRecord::Migration[4.2]
   def change
     add_column :my_module_groups, :project_id, :integer
 
diff --git a/db/migrate/20150804055341_add_color_to_tags.rb b/db/migrate/20150804055341_add_color_to_tags.rb
index 03ad53cd3..874abadd9 100644
--- a/db/migrate/20150804055341_add_color_to_tags.rb
+++ b/db/migrate/20150804055341_add_color_to_tags.rb
@@ -1,4 +1,4 @@
-class AddColorToTags < ActiveRecord::Migration
+class AddColorToTags < ActiveRecord::Migration[4.2]
   def change
     add_column :tags, :color, :string, { default: "#ff0000", null: false }
   end
diff --git a/db/migrate/20150820120553_create_sample_groups.rb b/db/migrate/20150820120553_create_sample_groups.rb
index b379f8a6f..699b2c2a6 100644
--- a/db/migrate/20150820120553_create_sample_groups.rb
+++ b/db/migrate/20150820120553_create_sample_groups.rb
@@ -1,4 +1,4 @@
-class CreateSampleGroups < ActiveRecord::Migration
+class CreateSampleGroups < ActiveRecord::Migration[4.2]
   def change
     create_table :sample_groups do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150820123018_create_sample_types.rb b/db/migrate/20150820123018_create_sample_types.rb
index a51d45c12..fc84a46ad 100644
--- a/db/migrate/20150820123018_create_sample_types.rb
+++ b/db/migrate/20150820123018_create_sample_types.rb
@@ -1,4 +1,4 @@
-class CreateSampleTypes < ActiveRecord::Migration
+class CreateSampleTypes < ActiveRecord::Migration[4.2]
   def change
     create_table :sample_types do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150820124022_add_default_columns_to_samples.rb b/db/migrate/20150820124022_add_default_columns_to_samples.rb
index 41d361460..cac7fe40b 100644
--- a/db/migrate/20150820124022_add_default_columns_to_samples.rb
+++ b/db/migrate/20150820124022_add_default_columns_to_samples.rb
@@ -1,4 +1,4 @@
-class AddDefaultColumnsToSamples < ActiveRecord::Migration
+class AddDefaultColumnsToSamples < ActiveRecord::Migration[4.2]
   def change
     add_column :samples, :sample_group_id, :integer
     add_column :samples, :sample_type_id, :integer
diff --git a/db/migrate/20150827130647_create_custom_fields.rb b/db/migrate/20150827130647_create_custom_fields.rb
index 4f6ee6b08..7c27f935c 100644
--- a/db/migrate/20150827130647_create_custom_fields.rb
+++ b/db/migrate/20150827130647_create_custom_fields.rb
@@ -1,4 +1,4 @@
-class CreateCustomFields < ActiveRecord::Migration
+class CreateCustomFields < ActiveRecord::Migration[4.2]
   def change
     create_table :custom_fields do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150827130822_create_sample_custom_fields.rb b/db/migrate/20150827130822_create_sample_custom_fields.rb
index 5cb52dec2..520bf1c2a 100644
--- a/db/migrate/20150827130822_create_sample_custom_fields.rb
+++ b/db/migrate/20150827130822_create_sample_custom_fields.rb
@@ -1,4 +1,4 @@
-class CreateSampleCustomFields < ActiveRecord::Migration
+class CreateSampleCustomFields < ActiveRecord::Migration[4.2]
   def change
     create_table :sample_custom_fields do |t|
       t.string :value, null: false
diff --git a/db/migrate/20150911125914_add_project_to_tags.rb b/db/migrate/20150911125914_add_project_to_tags.rb
index 2766b2ead..1033eb76b 100644
--- a/db/migrate/20150911125914_add_project_to_tags.rb
+++ b/db/migrate/20150911125914_add_project_to_tags.rb
@@ -1,4 +1,4 @@
-class AddProjectToTags < ActiveRecord::Migration
+class AddProjectToTags < ActiveRecord::Migration[4.2]
   def change
     # Add project ID reference, make it nullable at first
     add_column :tags, :project_id, :integer, { null: true }
diff --git a/db/migrate/20150915074650_create_reports.rb b/db/migrate/20150915074650_create_reports.rb
index b0ab25881..54787b372 100644
--- a/db/migrate/20150915074650_create_reports.rb
+++ b/db/migrate/20150915074650_create_reports.rb
@@ -1,4 +1,4 @@
-class CreateReports < ActiveRecord::Migration
+class CreateReports < ActiveRecord::Migration[4.2]
   def change
     create_table :reports do |t|
       t.string :name, null: false
diff --git a/db/migrate/20150923065605_create_temp_files.rb b/db/migrate/20150923065605_create_temp_files.rb
index 771fe259f..e992266ed 100644
--- a/db/migrate/20150923065605_create_temp_files.rb
+++ b/db/migrate/20150923065605_create_temp_files.rb
@@ -1,4 +1,4 @@
-class CreateTempFiles < ActiveRecord::Migration
+class CreateTempFiles < ActiveRecord::Migration[4.2]
   def change
     create_table :temp_files do |t|
       t.string :session_id, null: false
diff --git a/db/migrate/20150923110208_add_archive_to_my_modules.rb b/db/migrate/20150923110208_add_archive_to_my_modules.rb
index 115c6ba8f..88c57980f 100644
--- a/db/migrate/20150923110208_add_archive_to_my_modules.rb
+++ b/db/migrate/20150923110208_add_archive_to_my_modules.rb
@@ -1,7 +1,6 @@
-class AddArchiveToMyModules < ActiveRecord::Migration
+class AddArchiveToMyModules < ActiveRecord::Migration[4.2]
   def change
     add_column :my_modules, :archived, :boolean, { default: false, null: false }
     add_column :my_modules, :archived_on, :datetime
   end
 end
-
diff --git a/db/migrate/20150923154140_add_index_to_sample_name.rb b/db/migrate/20150923154140_add_index_to_sample_name.rb
index 1d8965d07..4b2dd64b6 100644
--- a/db/migrate/20150923154140_add_index_to_sample_name.rb
+++ b/db/migrate/20150923154140_add_index_to_sample_name.rb
@@ -1,4 +1,4 @@
-class AddIndexToSampleName < ActiveRecord::Migration
+class AddIndexToSampleName < ActiveRecord::Migration[4.2]
   def change
     add_index :samples, :name
   end
diff --git a/db/migrate/20150924115001_create_report_elements.rb b/db/migrate/20150924115001_create_report_elements.rb
index 6f0cd909a..0ef310429 100644
--- a/db/migrate/20150924115001_create_report_elements.rb
+++ b/db/migrate/20150924115001_create_report_elements.rb
@@ -1,4 +1,4 @@
-class CreateReportElements < ActiveRecord::Migration
+class CreateReportElements < ActiveRecord::Migration[4.2]
   def change
     create_table :report_elements do |t|
       t.integer :position, null: false
diff --git a/db/migrate/20150924181017_add_archive_to_results.rb b/db/migrate/20150924181017_add_archive_to_results.rb
index 06ef93e38..99cc20675 100644
--- a/db/migrate/20150924181017_add_archive_to_results.rb
+++ b/db/migrate/20150924181017_add_archive_to_results.rb
@@ -1,4 +1,4 @@
-class AddArchiveToResults < ActiveRecord::Migration
+class AddArchiveToResults < ActiveRecord::Migration[4.2]
   def change
     add_column :results, :archived, :boolean, { default: false, null: false }
     add_column :results, :archived_on, :datetime
diff --git a/db/migrate/20151005122041_add_created_by_to_assets.rb b/db/migrate/20151005122041_add_created_by_to_assets.rb
index fffe966cf..d7496e30b 100644
--- a/db/migrate/20151005122041_add_created_by_to_assets.rb
+++ b/db/migrate/20151005122041_add_created_by_to_assets.rb
@@ -1,4 +1,4 @@
-class AddCreatedByToAssets < ActiveRecord::Migration
+class AddCreatedByToAssets < ActiveRecord::Migration[4.2]
   def change
     tables = [:assets, :checklists, :checklist_items, :my_module_groups,
       :my_module_tags, :my_modules, :teams, :projects,
diff --git a/db/migrate/20151021082639_add_pg_trgm_support.rb b/db/migrate/20151021082639_add_pg_trgm_support.rb
index 73bebf20c..f390b9986 100644
--- a/db/migrate/20151021082639_add_pg_trgm_support.rb
+++ b/db/migrate/20151021082639_add_pg_trgm_support.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddPgTrgmSupport < ActiveRecord::Migration
+class AddPgTrgmSupport < ActiveRecord::Migration[4.2]
   def up
     if db_adapter_is? "PostgreSQL" then
       create_extension :pg_trgm
diff --git a/db/migrate/20151021085335_add_search_query_indexes.rb b/db/migrate/20151021085335_add_search_query_indexes.rb
index d98d4bda8..c8b67aa35 100644
--- a/db/migrate/20151021085335_add_search_query_indexes.rb
+++ b/db/migrate/20151021085335_add_search_query_indexes.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddSearchQueryIndexes < ActiveRecord::Migration
+class AddSearchQueryIndexes < ActiveRecord::Migration[4.2]
   def up
     add_index :projects, :team_id
     add_index :user_teams, :user_id
diff --git a/db/migrate/20151022123530_remove_unique_organization_name_index.rb b/db/migrate/20151022123530_remove_unique_organization_name_index.rb
index 8bc0b97cd..37f09cb70 100644
--- a/db/migrate/20151022123530_remove_unique_organization_name_index.rb
+++ b/db/migrate/20151022123530_remove_unique_organization_name_index.rb
@@ -1,4 +1,4 @@
-class RemoveUniqueOrganizationNameIndex < ActiveRecord::Migration
+class RemoveUniqueOrganizationNameIndex < ActiveRecord::Migration[4.2]
   def up
     remove_index :teams, :name
     add_index :teams, :name
diff --git a/db/migrate/20151028091615_add_counter_cache_to_samples.rb b/db/migrate/20151028091615_add_counter_cache_to_samples.rb
index 209ed057c..64a50aa06 100644
--- a/db/migrate/20151028091615_add_counter_cache_to_samples.rb
+++ b/db/migrate/20151028091615_add_counter_cache_to_samples.rb
@@ -1,4 +1,4 @@
-class AddCounterCacheToSamples < ActiveRecord::Migration
+class AddCounterCacheToSamples < ActiveRecord::Migration[4.2]
   def up
     add_column :samples, :nr_of_modules_assigned_to, :integer, :default => 0
     add_column :my_modules, :nr_of_assigned_samples, :integer, :default => 0
diff --git a/db/migrate/20151103155048_add_btree_gist_extension.rb b/db/migrate/20151103155048_add_btree_gist_extension.rb
index dd082e86b..ac4125317 100644
--- a/db/migrate/20151103155048_add_btree_gist_extension.rb
+++ b/db/migrate/20151103155048_add_btree_gist_extension.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddBtreeGistExtension < ActiveRecord::Migration
+class AddBtreeGistExtension < ActiveRecord::Migration[4.2]
   def up
     if db_adapter_is? "PostgreSQL" then
       create_extension :btree_gist
diff --git a/db/migrate/20151111135802_reset_assigned_samples_counters.rb b/db/migrate/20151111135802_reset_assigned_samples_counters.rb
index 2447f26a9..6bd44f991 100644
--- a/db/migrate/20151111135802_reset_assigned_samples_counters.rb
+++ b/db/migrate/20151111135802_reset_assigned_samples_counters.rb
@@ -1,4 +1,4 @@
-class ResetAssignedSamplesCounters < ActiveRecord::Migration
+class ResetAssignedSamplesCounters < ActiveRecord::Migration[4.2]
   def change
     Sample.find_each do |sample|
       Sample.reset_counters(sample.id, :sample_my_modules)
diff --git a/db/migrate/20151117083839_add_project_reference_to_activity.rb b/db/migrate/20151117083839_add_project_reference_to_activity.rb
index 1da4062be..e6493984c 100644
--- a/db/migrate/20151117083839_add_project_reference_to_activity.rb
+++ b/db/migrate/20151117083839_add_project_reference_to_activity.rb
@@ -1,4 +1,4 @@
-class AddProjectReferenceToActivity < ActiveRecord::Migration
+class AddProjectReferenceToActivity < ActiveRecord::Migration[4.2]
   def up
     # Make my module reference nullable
     change_column_null :activities, :my_module_id, true
diff --git a/db/migrate/20151119141714_create_asset_text_data.rb b/db/migrate/20151119141714_create_asset_text_data.rb
index 9ea3b592b..9cc111abd 100644
--- a/db/migrate/20151119141714_create_asset_text_data.rb
+++ b/db/migrate/20151119141714_create_asset_text_data.rb
@@ -1,8 +1,8 @@
-class CreateAssetTextData < ActiveRecord::Migration
+class CreateAssetTextData < ActiveRecord::Migration[4.2]
   def change
     create_table :asset_text_data do |t|
       t.text :data, null: false
-      t.integer :asset_id, null: false 
+      t.integer :asset_id, null: false
       t.timestamps null: false
     end
     add_foreign_key :asset_text_data, :assets
diff --git a/db/migrate/20151130160157_add_text_search_vector_to_asset_text_data.rb b/db/migrate/20151130160157_add_text_search_vector_to_asset_text_data.rb
index 7a9a24f3a..3a36b682a 100644
--- a/db/migrate/20151130160157_add_text_search_vector_to_asset_text_data.rb
+++ b/db/migrate/20151130160157_add_text_search_vector_to_asset_text_data.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddTextSearchVectorToAssetTextData < ActiveRecord::Migration
+class AddTextSearchVectorToAssetTextData < ActiveRecord::Migration[4.2]
   def change
     add_column :asset_text_data, :data_vector, :tsvector
 
diff --git a/db/migrate/20151203100514_add_workflow_order_to_my_modules.rb b/db/migrate/20151203100514_add_workflow_order_to_my_modules.rb
index 701a24710..5aed71d94 100644
--- a/db/migrate/20151203100514_add_workflow_order_to_my_modules.rb
+++ b/db/migrate/20151203100514_add_workflow_order_to_my_modules.rb
@@ -1,4 +1,4 @@
-class AddWorkflowOrderToMyModules < ActiveRecord::Migration
+class AddWorkflowOrderToMyModules < ActiveRecord::Migration[4.2]
   def up
     add_column :my_modules, :workflow_order, :integer, { null: false, default: -1}
   end
diff --git a/db/migrate/20151207151820_add_timezone_to_user.rb b/db/migrate/20151207151820_add_timezone_to_user.rb
index abc92216a..62d9d2680 100644
--- a/db/migrate/20151207151820_add_timezone_to_user.rb
+++ b/db/migrate/20151207151820_add_timezone_to_user.rb
@@ -1,4 +1,4 @@
-class AddTimezoneToUser < ActiveRecord::Migration
+class AddTimezoneToUser < ActiveRecord::Migration[4.2]
   def change
     add_column :users, :time_zone, :string, :default => "UTC"
   end
diff --git a/db/migrate/20151214110800_add_organization_management_support.rb b/db/migrate/20151214110800_add_organization_management_support.rb
index 1236576cf..5fd52c60e 100644
--- a/db/migrate/20151214110800_add_organization_management_support.rb
+++ b/db/migrate/20151214110800_add_organization_management_support.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddOrganizationManagementSupport < ActiveRecord::Migration
+class AddOrganizationManagementSupport < ActiveRecord::Migration[4.2]
   def up
     # Add nullable description to team
     add_column :teams, :description, :string
diff --git a/db/migrate/20151215103642_add_foreign_keys_to_tables.rb b/db/migrate/20151215103642_add_foreign_keys_to_tables.rb
index a780a1fc2..e1239d618 100644
--- a/db/migrate/20151215103642_add_foreign_keys_to_tables.rb
+++ b/db/migrate/20151215103642_add_foreign_keys_to_tables.rb
@@ -1,4 +1,4 @@
-class AddForeignKeysToTables < ActiveRecord::Migration
+class AddForeignKeysToTables < ActiveRecord::Migration[4.2]
   def change
     tables = [:assets, :checklists, :checklist_items, :my_module_groups,
       :my_module_tags, :my_modules, :teams, :projects,
diff --git a/db/migrate/20151215134147_add_text_search_vector_to_tables.rb b/db/migrate/20151215134147_add_text_search_vector_to_tables.rb
index 39d91b6b7..b490bb1d3 100644
--- a/db/migrate/20151215134147_add_text_search_vector_to_tables.rb
+++ b/db/migrate/20151215134147_add_text_search_vector_to_tables.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class AddTextSearchVectorToTables < ActiveRecord::Migration
+class AddTextSearchVectorToTables < ActiveRecord::Migration[4.2]
   def change
     add_column :tables, :data_vector, :tsvector
 
diff --git a/db/migrate/20151216095259_generate_text_search_vector_for_table_contents.rb b/db/migrate/20151216095259_generate_text_search_vector_for_table_contents.rb
index d733008c0..3b1a46969 100644
--- a/db/migrate/20151216095259_generate_text_search_vector_for_table_contents.rb
+++ b/db/migrate/20151216095259_generate_text_search_vector_for_table_contents.rb
@@ -1,7 +1,7 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class GenerateTextSearchVectorForTableContents < ActiveRecord::Migration
+class GenerateTextSearchVectorForTableContents < ActiveRecord::Migration[4.2]
   def up
     if db_adapter_is? "PostgreSQL" then
       execute <<-SQL
diff --git a/db/migrate/20160114155705_create_delayed_jobs.rb b/db/migrate/20160114155705_create_delayed_jobs.rb
index 471f95e2d..bd1bbbf31 100644
--- a/db/migrate/20160114155705_create_delayed_jobs.rb
+++ b/db/migrate/20160114155705_create_delayed_jobs.rb
@@ -1,4 +1,4 @@
-class CreateDelayedJobs < ActiveRecord::Migration
+class CreateDelayedJobs < ActiveRecord::Migration[4.2]
   def self.up
     create_table :delayed_jobs, force: true do |table|
       table.integer :priority, default: 0, null: false # Allows some jobs to jump to the front of the queue
diff --git a/db/migrate/20160118114850_remove_private_organizations.rb b/db/migrate/20160118114850_remove_private_organizations.rb
index fe07f5be7..952022d53 100644
--- a/db/migrate/20160118114850_remove_private_organizations.rb
+++ b/db/migrate/20160118114850_remove_private_organizations.rb
@@ -1,4 +1,4 @@
-class RemovePrivateOrganizations < ActiveRecord::Migration
+class RemovePrivateOrganizations < ActiveRecord::Migration[4.2]
   def up
     remove_foreign_key :teams, column: :private_user_id
     remove_index :teams, :private_user_id
diff --git a/db/migrate/20160119101947_add_position_to_checklist_item.rb b/db/migrate/20160119101947_add_position_to_checklist_item.rb
index 63a7a2a14..afe8ed3ad 100644
--- a/db/migrate/20160119101947_add_position_to_checklist_item.rb
+++ b/db/migrate/20160119101947_add_position_to_checklist_item.rb
@@ -1,4 +1,4 @@
-class AddPositionToChecklistItem < ActiveRecord::Migration
+class AddPositionToChecklistItem < ActiveRecord::Migration[4.2]
   def change
     add_column :checklist_items, :position, :integer, { default: 0, null: false }
 
diff --git a/db/migrate/20160125200130_devise_invitable_add_to_users.rb b/db/migrate/20160125200130_devise_invitable_add_to_users.rb
index 788529ab3..5856cd76f 100644
--- a/db/migrate/20160125200130_devise_invitable_add_to_users.rb
+++ b/db/migrate/20160125200130_devise_invitable_add_to_users.rb
@@ -1,4 +1,4 @@
-class DeviseInvitableAddToUsers < ActiveRecord::Migration
+class DeviseInvitableAddToUsers < ActiveRecord::Migration[4.2]
   def up
     change_table :users do |t|
       t.string     :invitation_token
diff --git a/db/migrate/20160125205500_add_empty_field_to_asset.rb b/db/migrate/20160125205500_add_empty_field_to_asset.rb
index 0a6a96dec..375ac3db3 100644
--- a/db/migrate/20160125205500_add_empty_field_to_asset.rb
+++ b/db/migrate/20160125205500_add_empty_field_to_asset.rb
@@ -1,4 +1,4 @@
-class AddEmptyFieldToAsset < ActiveRecord::Migration
+class AddEmptyFieldToAsset < ActiveRecord::Migration[4.2]
   def up
     add_column :assets, :file_present, :boolean, default: false
     Asset.update_all(file_present: true)
@@ -8,4 +8,4 @@ class AddEmptyFieldToAsset < ActiveRecord::Migration
   def down
     remove_column :assets, :file_present
   end
-end
\ No newline at end of file
+end
diff --git a/db/migrate/20160201085344_add_tutorial_status_field_to_user.rb b/db/migrate/20160201085344_add_tutorial_status_field_to_user.rb
index 5fd99a9fb..9b0055eb0 100644
--- a/db/migrate/20160201085344_add_tutorial_status_field_to_user.rb
+++ b/db/migrate/20160201085344_add_tutorial_status_field_to_user.rb
@@ -1,4 +1,4 @@
-class AddTutorialStatusFieldToUser < ActiveRecord::Migration
+class AddTutorialStatusFieldToUser < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :tutorial_status, :integer, default: 0
 
@@ -11,4 +11,4 @@ class AddTutorialStatusFieldToUser < ActiveRecord::Migration
   def down
     remove_column :users, :tutorial_status
   end
-end
\ No newline at end of file
+end
diff --git a/db/migrate/20160205192344_migrate_organizations_structure.rb b/db/migrate/20160205192344_migrate_organizations_structure.rb
index a5563fffd..fd58a291d 100644
--- a/db/migrate/20160205192344_migrate_organizations_structure.rb
+++ b/db/migrate/20160205192344_migrate_organizations_structure.rb
@@ -1,4 +1,4 @@
-class MigrateOrganizationsStructure < ActiveRecord::Migration
+class MigrateOrganizationsStructure < ActiveRecord::Migration[4.2]
   def up
     # Update estimated size of all assets
     Asset.includes(:asset_text_datum).find_each do |asset|
diff --git a/db/migrate/20160407063323_create_protocols.rb b/db/migrate/20160407063323_create_protocols.rb
index 582e11e09..41d1f05d7 100644
--- a/db/migrate/20160407063323_create_protocols.rb
+++ b/db/migrate/20160407063323_create_protocols.rb
@@ -1,4 +1,4 @@
-class CreateProtocols < ActiveRecord::Migration
+class CreateProtocols < ActiveRecord::Migration[4.2]
   def up
     # First, create protocol table
     create_table :protocols do |t|
diff --git a/db/migrate/20160421100400_add_published_on_to_protocols.rb b/db/migrate/20160421100400_add_published_on_to_protocols.rb
index a39d5f61b..31b787dae 100644
--- a/db/migrate/20160421100400_add_published_on_to_protocols.rb
+++ b/db/migrate/20160421100400_add_published_on_to_protocols.rb
@@ -1,4 +1,4 @@
-class AddPublishedOnToProtocols < ActiveRecord::Migration
+class AddPublishedOnToProtocols < ActiveRecord::Migration[4.2]
   def up
     add_column :protocols, :published_on, :datetime
 
diff --git a/db/migrate/20160425133500_add_counter_cache_to_protocols.rb b/db/migrate/20160425133500_add_counter_cache_to_protocols.rb
index b8edf86a0..6906a649b 100644
--- a/db/migrate/20160425133500_add_counter_cache_to_protocols.rb
+++ b/db/migrate/20160425133500_add_counter_cache_to_protocols.rb
@@ -1,4 +1,4 @@
-class AddCounterCacheToProtocols < ActiveRecord::Migration
+class AddCounterCacheToProtocols < ActiveRecord::Migration[4.2]
   def up
     add_column :protocols, :nr_of_synced_children, :integer, default: 0
 
diff --git a/db/migrate/20160429082100_add_counter_cache_to_protocol_keywords.rb b/db/migrate/20160429082100_add_counter_cache_to_protocol_keywords.rb
index 6f9566fe6..ca3053589 100644
--- a/db/migrate/20160429082100_add_counter_cache_to_protocol_keywords.rb
+++ b/db/migrate/20160429082100_add_counter_cache_to_protocol_keywords.rb
@@ -1,4 +1,4 @@
-class AddCounterCacheToProtocolKeywords < ActiveRecord::Migration
+class AddCounterCacheToProtocolKeywords < ActiveRecord::Migration[4.2]
   def up
     add_column :protocol_keywords, :nr_of_protocols, :integer, default: 0
 
diff --git a/db/migrate/20160429102200_add_organization_id_to_protocol_keywords.rb b/db/migrate/20160429102200_add_organization_id_to_protocol_keywords.rb
index b49d1622e..8e4c93f5d 100644
--- a/db/migrate/20160429102200_add_organization_id_to_protocol_keywords.rb
+++ b/db/migrate/20160429102200_add_organization_id_to_protocol_keywords.rb
@@ -1,4 +1,4 @@
-class AddOrganizationIdToProtocolKeywords < ActiveRecord::Migration
+class AddOrganizationIdToProtocolKeywords < ActiveRecord::Migration[4.2]
   def up
     add_column :protocol_keywords, :team_id, :integer
     add_foreign_key :protocol_keywords, :teams, column: :team_id
diff --git a/db/migrate/20160513143117_refresh_assigned_samples_counters.rb b/db/migrate/20160513143117_refresh_assigned_samples_counters.rb
index 242a29682..4f503cdd9 100644
--- a/db/migrate/20160513143117_refresh_assigned_samples_counters.rb
+++ b/db/migrate/20160513143117_refresh_assigned_samples_counters.rb
@@ -1,4 +1,4 @@
-class RefreshAssignedSamplesCounters < ActiveRecord::Migration
+class RefreshAssignedSamplesCounters < ActiveRecord::Migration[4.2]
   def up
     # Reset the counters for assigned samples
     Sample.find_each do |sample|
diff --git a/db/migrate/20160513165000_rename_duplicate_columns.rb b/db/migrate/20160513165000_rename_duplicate_columns.rb
index 904729927..5c1028665 100644
--- a/db/migrate/20160513165000_rename_duplicate_columns.rb
+++ b/db/migrate/20160513165000_rename_duplicate_columns.rb
@@ -1,4 +1,4 @@
-class RenameDuplicateColumns < ActiveRecord::Migration
+class RenameDuplicateColumns < ActiveRecord::Migration[4.2]
   require 'set'
 
   def up
diff --git a/db/migrate/20160527152000_report_grouping_removal.rb b/db/migrate/20160527152000_report_grouping_removal.rb
index dc24d5733..a06d77d39 100644
--- a/db/migrate/20160527152000_report_grouping_removal.rb
+++ b/db/migrate/20160527152000_report_grouping_removal.rb
@@ -1,5 +1,5 @@
-class ReportGroupingRemoval < ActiveRecord::Migration
-  def up  
+class ReportGroupingRemoval < ActiveRecord::Migration[4.2]
+  def up
     remove_column :reports, :grouped_by
   end
 
diff --git a/db/migrate/20160531094100_rename_synced_children_to_linked_children.rb b/db/migrate/20160531094100_rename_synced_children_to_linked_children.rb
index a908c1815..9bc25e6c3 100644
--- a/db/migrate/20160531094100_rename_synced_children_to_linked_children.rb
+++ b/db/migrate/20160531094100_rename_synced_children_to_linked_children.rb
@@ -1,4 +1,4 @@
-class RenameSyncedChildrenToLinkedChildren < ActiveRecord::Migration
+class RenameSyncedChildrenToLinkedChildren < ActiveRecord::Migration[4.2]
   def up
     rename_column :protocols, :nr_of_synced_children, :nr_of_linked_children
   end
@@ -6,4 +6,4 @@ class RenameSyncedChildrenToLinkedChildren < ActiveRecord::Migration
   def down
     rename_column :protocols, :nr_of_linked_children, :nr_of_synced_children
   end
-end
\ No newline at end of file
+end
diff --git a/db/migrate/20160704110900_remove_keywords_from_module_protocols.rb b/db/migrate/20160704110900_remove_keywords_from_module_protocols.rb
index 08ed502ce..5adb4913f 100644
--- a/db/migrate/20160704110900_remove_keywords_from_module_protocols.rb
+++ b/db/migrate/20160704110900_remove_keywords_from_module_protocols.rb
@@ -1,4 +1,4 @@
-class RemoveKeywordsFromModuleProtocols < ActiveRecord::Migration
+class RemoveKeywordsFromModuleProtocols < ActiveRecord::Migration[4.2]
   def up
     Protocol.find_each do |p|
       if p.in_module? then
@@ -6,4 +6,4 @@ class RemoveKeywordsFromModuleProtocols < ActiveRecord::Migration
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/db/migrate/20160722082700_add_experiment_level.rb b/db/migrate/20160722082700_add_experiment_level.rb
index 5ee783e09..1e13c55ba 100644
--- a/db/migrate/20160722082700_add_experiment_level.rb
+++ b/db/migrate/20160722082700_add_experiment_level.rb
@@ -1,4 +1,4 @@
-class AddExperimentLevel < ActiveRecord::Migration
+class AddExperimentLevel < ActiveRecord::Migration[4.2]
   def up
     # Create experiments table
     create_table :experiments do |t|
diff --git a/db/migrate/20160803082801_add_experiment_to_report_elements.rb b/db/migrate/20160803082801_add_experiment_to_report_elements.rb
index 1dfca0bb7..b2b9e7694 100644
--- a/db/migrate/20160803082801_add_experiment_to_report_elements.rb
+++ b/db/migrate/20160803082801_add_experiment_to_report_elements.rb
@@ -1,4 +1,4 @@
-class AddExperimentToReportElements < ActiveRecord::Migration
+class AddExperimentToReportElements < ActiveRecord::Migration[4.2]
   def up
     add_column :report_elements, :experiment_id, :integer
     add_foreign_key :report_elements, :experiments
diff --git a/db/migrate/20160808083040_add_attachment_workflowimg_to_experiments.rb b/db/migrate/20160808083040_add_attachment_workflowimg_to_experiments.rb
index c0d469667..5095d1542 100644
--- a/db/migrate/20160808083040_add_attachment_workflowimg_to_experiments.rb
+++ b/db/migrate/20160808083040_add_attachment_workflowimg_to_experiments.rb
@@ -1,4 +1,4 @@
-class AddAttachmentWorkflowimgToExperiments < ActiveRecord::Migration
+class AddAttachmentWorkflowimgToExperiments < ActiveRecord::Migration[4.2]
   def self.up
     add_attachment :experiments, :workflowimg
   end
diff --git a/db/migrate/20160809074757_update_my_module_coordinate.rb b/db/migrate/20160809074757_update_my_module_coordinate.rb
index 510271f51..20634e17d 100644
--- a/db/migrate/20160809074757_update_my_module_coordinate.rb
+++ b/db/migrate/20160809074757_update_my_module_coordinate.rb
@@ -1,4 +1,4 @@
-class UpdateMyModuleCoordinate < ActiveRecord::Migration
+class UpdateMyModuleCoordinate < ActiveRecord::Migration[4.2]
   def change
     MyModule.find_each do |my_module|
       x = my_module.x
diff --git a/db/migrate/20160928114119_create_notifications.rb b/db/migrate/20160928114119_create_notifications.rb
index 033651646..e5d8be530 100644
--- a/db/migrate/20160928114119_create_notifications.rb
+++ b/db/migrate/20160928114119_create_notifications.rb
@@ -1,4 +1,4 @@
-class CreateNotifications < ActiveRecord::Migration
+class CreateNotifications < ActiveRecord::Migration[4.2]
   def change
     create_table :notifications do |t|
       t.string :title
diff --git a/db/migrate/20160928114915_create_user_notifications.rb b/db/migrate/20160928114915_create_user_notifications.rb
index 4d52905e9..4656c0db2 100644
--- a/db/migrate/20160928114915_create_user_notifications.rb
+++ b/db/migrate/20160928114915_create_user_notifications.rb
@@ -1,4 +1,4 @@
-class CreateUserNotifications < ActiveRecord::Migration
+class CreateUserNotifications < ActiveRecord::Migration[4.2]
   def change
     create_table :user_notifications do |t|
       t.belongs_to :user, index: true, foreign_key: true
diff --git a/db/migrate/20161004074754_add_notifications_settings_to_user.rb b/db/migrate/20161004074754_add_notifications_settings_to_user.rb
index d9599c118..b2ad0a33e 100644
--- a/db/migrate/20161004074754_add_notifications_settings_to_user.rb
+++ b/db/migrate/20161004074754_add_notifications_settings_to_user.rb
@@ -1,4 +1,4 @@
-class AddNotificationsSettingsToUser < ActiveRecord::Migration
+class AddNotificationsSettingsToUser < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :assignments_notification, :boolean, default: true
     add_column :users, :recent_notification, :boolean, default: true
diff --git a/db/migrate/20161006065203_add_email_notification_settings_to_user.rb b/db/migrate/20161006065203_add_email_notification_settings_to_user.rb
index 31f9e8bad..06f70a541 100644
--- a/db/migrate/20161006065203_add_email_notification_settings_to_user.rb
+++ b/db/migrate/20161006065203_add_email_notification_settings_to_user.rb
@@ -1,4 +1,4 @@
-class AddEmailNotificationSettingsToUser < ActiveRecord::Migration
+class AddEmailNotificationSettingsToUser < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :assignments_notification_email, :boolean, default: false
     add_column :users, :recent_notification_email, :boolean, default: false
diff --git a/db/migrate/20161011074804_add_current_organization_to_user.rb b/db/migrate/20161011074804_add_current_organization_to_user.rb
index 31cea5d63..26bd8034f 100644
--- a/db/migrate/20161011074804_add_current_organization_to_user.rb
+++ b/db/migrate/20161011074804_add_current_organization_to_user.rb
@@ -1,4 +1,4 @@
-class AddCurrentOrganizationToUser < ActiveRecord::Migration
+class AddCurrentOrganizationToUser < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :current_team_id, :integer
     add_foreign_key :users, :teams, column: :current_team_id
diff --git a/db/migrate/20161012112900_add_email_system_notification_setting_to_user.rb b/db/migrate/20161012112900_add_email_system_notification_setting_to_user.rb
index 90e760b2e..04e5eddc4 100644
--- a/db/migrate/20161012112900_add_email_system_notification_setting_to_user.rb
+++ b/db/migrate/20161012112900_add_email_system_notification_setting_to_user.rb
@@ -1,4 +1,4 @@
-class AddEmailSystemNotificationSettingToUser < ActiveRecord::Migration
+class AddEmailSystemNotificationSettingToUser < ActiveRecord::Migration[4.2]
   def up
     add_column :users,
                :system_message_notification_email,
diff --git a/db/migrate/20161123161514_create_samples_tables.rb b/db/migrate/20161123161514_create_samples_tables.rb
index 83b715547..8c874b10f 100644
--- a/db/migrate/20161123161514_create_samples_tables.rb
+++ b/db/migrate/20161123161514_create_samples_tables.rb
@@ -1,4 +1,4 @@
-class CreateSamplesTables < ActiveRecord::Migration
+class CreateSamplesTables < ActiveRecord::Migration[4.2]
   def change
     create_table :samples_tables do |t|
       t.jsonb :status, null: false,
diff --git a/db/migrate/20161125153600_rename_non_unique_sample_types_groups.rb b/db/migrate/20161125153600_rename_non_unique_sample_types_groups.rb
index 1b3ee5680..2c6abaf33 100644
--- a/db/migrate/20161125153600_rename_non_unique_sample_types_groups.rb
+++ b/db/migrate/20161125153600_rename_non_unique_sample_types_groups.rb
@@ -1,4 +1,4 @@
-class RenameNonUniqueSampleTypesGroups < ActiveRecord::Migration
+class RenameNonUniqueSampleTypesGroups < ActiveRecord::Migration[4.2]
   def up
     Team.find_each do |team|
       st_ids = []
diff --git a/db/migrate/20161129111100_add_wopi.rb b/db/migrate/20161129111100_add_wopi.rb
index c3c15f419..9e9d35b63 100644
--- a/db/migrate/20161129111100_add_wopi.rb
+++ b/db/migrate/20161129111100_add_wopi.rb
@@ -1,4 +1,4 @@
-class AddWopi < ActiveRecord::Migration
+class AddWopi < ActiveRecord::Migration[4.2]
   def up
     add_column :assets, :lock, :string, limit: 1024
     add_column :assets, :lock_ttl, :integer
diff --git a/db/migrate/20161129171012_add_authentication_token_to_users.rb b/db/migrate/20161129171012_add_authentication_token_to_users.rb
index cf69f8ee5..578c5395f 100644
--- a/db/migrate/20161129171012_add_authentication_token_to_users.rb
+++ b/db/migrate/20161129171012_add_authentication_token_to_users.rb
@@ -1,4 +1,4 @@
-class AddAuthenticationTokenToUsers < ActiveRecord::Migration
+class AddAuthenticationTokenToUsers < ActiveRecord::Migration[4.2]
   def change
     add_column :users, :authentication_token, :string, limit: 30
     add_index :users, :authentication_token, unique: true
diff --git a/db/migrate/20161208145354_add_processing_to_assets.rb b/db/migrate/20161208145354_add_processing_to_assets.rb
index 97cff9034..badc57561 100644
--- a/db/migrate/20161208145354_add_processing_to_assets.rb
+++ b/db/migrate/20161208145354_add_processing_to_assets.rb
@@ -1,4 +1,4 @@
-class AddProcessingToAssets < ActiveRecord::Migration
+class AddProcessingToAssets < ActiveRecord::Migration[4.2]
   def change
     add_column :assets, :file_processing, :boolean
   end
diff --git a/db/migrate/20170105162500_add_index_to_users_full_name.rb b/db/migrate/20170105162500_add_index_to_users_full_name.rb
index 539634924..4a980c1cb 100644
--- a/db/migrate/20170105162500_add_index_to_users_full_name.rb
+++ b/db/migrate/20170105162500_add_index_to_users_full_name.rb
@@ -1,4 +1,4 @@
-class AddIndexToUsersFullName < ActiveRecord::Migration
+class AddIndexToUsersFullName < ActiveRecord::Migration[4.2]
   def change
     add_index :users, :full_name
   end
diff --git a/db/migrate/20170116143350_add_name_to_tables.rb b/db/migrate/20170116143350_add_name_to_tables.rb
index 78f74d218..ce2a2513e 100644
--- a/db/migrate/20170116143350_add_name_to_tables.rb
+++ b/db/migrate/20170116143350_add_name_to_tables.rb
@@ -1,4 +1,4 @@
-class AddNameToTables < ActiveRecord::Migration
+class AddNameToTables < ActiveRecord::Migration[4.2]
   def change
     add_column :tables, :name, :string, default: '', index: true
   end
diff --git a/db/migrate/20170124135736_rename_organization_to_team.rb b/db/migrate/20170124135736_rename_organization_to_team.rb
index 474b1e046..c01c77c52 100644
--- a/db/migrate/20170124135736_rename_organization_to_team.rb
+++ b/db/migrate/20170124135736_rename_organization_to_team.rb
@@ -1,4 +1,4 @@
-class RenameOrganizationToTeam < ActiveRecord::Migration
+class RenameOrganizationToTeam < ActiveRecord::Migration[4.2]
   def up
     unless ActiveRecord::Base.connection.table_exists?('organizations') &&
            ActiveRecord::Base.connection.table_exists?('user_organizations')
diff --git a/db/migrate/20170207100731_add_state_to_tasks.rb b/db/migrate/20170207100731_add_state_to_tasks.rb
index f1452b61e..626a2f622 100644
--- a/db/migrate/20170207100731_add_state_to_tasks.rb
+++ b/db/migrate/20170207100731_add_state_to_tasks.rb
@@ -1,4 +1,4 @@
-class AddStateToTasks < ActiveRecord::Migration
+class AddStateToTasks < ActiveRecord::Migration[4.2]
   def up
     add_column :my_modules,
                :state,
diff --git a/db/migrate/20170217141402_create_settings_table.rb b/db/migrate/20170217141402_create_settings_table.rb
index 27608f44e..111349360 100644
--- a/db/migrate/20170217141402_create_settings_table.rb
+++ b/db/migrate/20170217141402_create_settings_table.rb
@@ -1,4 +1,4 @@
-class CreateSettingsTable < ActiveRecord::Migration
+class CreateSettingsTable < ActiveRecord::Migration[4.2]
   def change
     create_table :settings do |t|
       t.text :type, null: false
diff --git a/db/migrate/20170306121855_convert_comments_to_sti_model.rb b/db/migrate/20170306121855_convert_comments_to_sti_model.rb
index c42c23669..7b9016c07 100644
--- a/db/migrate/20170306121855_convert_comments_to_sti_model.rb
+++ b/db/migrate/20170306121855_convert_comments_to_sti_model.rb
@@ -1,4 +1,4 @@
-class ConvertCommentsToStiModel < ActiveRecord::Migration
+class ConvertCommentsToStiModel < ActiveRecord::Migration[4.2]
   def change
     add_column :comments, :type, :string
     add_column :comments, :associated_id, :integer
diff --git a/db/migrate/20170321131116_create_zip_exports.rb b/db/migrate/20170321131116_create_zip_exports.rb
index 5794d9e45..19e0cf688 100644
--- a/db/migrate/20170321131116_create_zip_exports.rb
+++ b/db/migrate/20170321131116_create_zip_exports.rb
@@ -1,4 +1,4 @@
-class CreateZipExports < ActiveRecord::Migration
+class CreateZipExports < ActiveRecord::Migration[4.2]
   def change
     create_table :zip_exports do |t|
       t.references :user, index: true, foreign_key: true
diff --git a/db/migrate/20170322095856_add_team_id_to_asset_and_tables.rb b/db/migrate/20170322095856_add_team_id_to_asset_and_tables.rb
index fa6a8b2ae..b15a10423 100644
--- a/db/migrate/20170322095856_add_team_id_to_asset_and_tables.rb
+++ b/db/migrate/20170322095856_add_team_id_to_asset_and_tables.rb
@@ -1,4 +1,4 @@
-class AddTeamIdToAssetAndTables < ActiveRecord::Migration
+class AddTeamIdToAssetAndTables < ActiveRecord::Migration[4.2]
   def change
     add_column :assets, :team_id, :integer
     add_index :assets, :team_id
diff --git a/db/migrate/20170330092353_remove_logs_table.rb b/db/migrate/20170330092353_remove_logs_table.rb
index 75028158f..98fe0b580 100644
--- a/db/migrate/20170330092353_remove_logs_table.rb
+++ b/db/migrate/20170330092353_remove_logs_table.rb
@@ -1,4 +1,4 @@
-class RemoveLogsTable < ActiveRecord::Migration
+class RemoveLogsTable < ActiveRecord::Migration[4.2]
   def change
     drop_table :logs
   end
diff --git a/db/migrate/20170404150845_remove_default_user_project_role_value.rb b/db/migrate/20170404150845_remove_default_user_project_role_value.rb
index 68718203e..4a13d353b 100644
--- a/db/migrate/20170404150845_remove_default_user_project_role_value.rb
+++ b/db/migrate/20170404150845_remove_default_user_project_role_value.rb
@@ -1,4 +1,4 @@
-class RemoveDefaultUserProjectRoleValue < ActiveRecord::Migration
+class RemoveDefaultUserProjectRoleValue < ActiveRecord::Migration[4.2]
   def up
     change_column_default(:user_projects, :role, nil)
   end
diff --git a/db/migrate/20170407082423_update_indexes_for_faster_search.rb b/db/migrate/20170407082423_update_indexes_for_faster_search.rb
index f5a4013da..403c466d5 100644
--- a/db/migrate/20170407082423_update_indexes_for_faster_search.rb
+++ b/db/migrate/20170407082423_update_indexes_for_faster_search.rb
@@ -1,56 +1,96 @@
 require File.expand_path('app/helpers/database_helper')
 include DatabaseHelper
 
-class UpdateIndexesForFasterSearch < ActiveRecord::Migration
+class UpdateIndexesForFasterSearch < ActiveRecord::Migration[4.2]
   def up
     if db_adapter_is? 'PostgreSQL'
       # Removing old indexes
-      remove_index :projects, :name if index_exists?(:projects, :name)
-      remove_index :my_modules, :name if index_exists?(:my_modules, :name)
-      if index_exists?(:my_modules, :description)
-        remove_index :my_modules, :description
+      if index_name_exists? :projects, :index_projects_on_name
+        remove_index :projects, name: :index_projects_on_name
       end
-      remove_index :protocols, :name if index_exists?(:protocols, :name)
-      if index_exists?(:protocols, :description)
-        remove_index :protocols, :description
+      if index_name_exists? :my_modules, :index_my_modules_on_name
+        remove_index :my_modules, name: :index_my_modules_on_name
       end
-      remove_index :protocols, :authors if index_exists?(:protocols, :authors)
-      if index_exists?(:protocol_keywords, :name)
-        remove_index :protocol_keywords, :name
+      if index_name_exists? :my_modules, :index_my_modules_on_description
+        remove_index :my_modules, name: :index_my_modules_on_description
       end
-      if index_exists?(:my_module_groups, :name)
-        remove_index :my_module_groups, :name
+      if index_name_exists? :protocols, :index_protocols_on_name
+        remove_index :protocols, name: :index_protocols_on_name
       end
-      remove_index :tags, :name if index_exists?(:tags, :name)
-      remove_index :results, :name if index_exists?(:results, :name)
-      remove_index :result_texts, :text if index_exists?(:result_texts, :text)
-      remove_index :reports, :name if index_exists?(:reports, :name)
-      if index_exists?(:reports, :description)
-        remove_index :reports, :description
+      if index_name_exists? :protocols, :index_protocols_on_description
+        remove_index :protocols, name: :index_protocols_on_description
       end
-      if index_exists?(:assets, :file_file_name)
-        remove_index :assets, :file_file_name
+      if index_name_exists? :protocols, :index_protocols_on_authors
+        remove_index :protocols, name: :index_protocols_on_authors
       end
-      remove_index :samples, :name if index_exists?(:samples, :name)
-      remove_index :sample_types, :name if index_exists?(:sample_types, :name)
-      remove_index :sample_groups, :name if index_exists?(:sample_groups, :name)
-      if index_exists?(:sample_custom_fields, :value)
-        remove_index :sample_custom_fields, :value
+      if index_name_exists? :protocol_keywords, :index_protocol_keywords_on_name
+        remove_index :protocol_keywords, name: :index_protocol_keywords_on_name
       end
-      remove_index :steps, :name if index_exists?(:steps, :name)
-      remove_index :steps, :description if index_exists?(:steps, :description)
-      remove_index :checklists, :name if index_exists?(:checklists, :name)
-      if index_exists?(:checklist_items, :text)
-        remove_index :checklist_items, :text
+      if index_name_exists? :my_module_groups, :index_my_module_groups_on_name
+        remove_index :my_module_groups, name: :index_my_module_groups_on_name
       end
-      remove_index :tables, :name if index_exists?(:tables, :name)
-      remove_index :users, :full_name if index_exists?(:users, :full_name)
-      remove_index :comments, :message if index_exists?(:comments, :message)
-      remove_index :comments, :type if index_exists?(:comments, :type)
-      if index_exists?(:protocols, :protocol_type)
-        remove_index :protocols, :protocol_type
+      if index_name_exists? :tags, :index_tags_on_name
+        remove_index :tags, name: :index_tags_on_name
+      end
+      if index_name_exists? :results, :index_results_on_name
+        remove_index :results, name: :index_results_on_name
+      end
+      if index_name_exists? :result_texts, :index_result_texts_on_text
+        remove_index :result_texts, name: :index_result_texts_on_text
+      end
+      if index_name_exists? :reports, :index_reports_on_name
+        remove_index :reports, name: :index_reports_on_name
+      end
+      if index_name_exists? :reports, :index_reports_on_description
+        remove_index :reports, name: :index_reports_on_description
+      end
+      if index_name_exists?(:assets, :index_assets_on_file_file_name)
+        remove_index :assets, name: :index_assets_on_file_file_name
+      end
+      if index_name_exists? :samples, :index_samples_on_name
+        remove_index :samples, name: :index_samples_on_name
+      end
+      if index_name_exists? :sample_types, :index_sample_types_on_name
+        remove_index :sample_types, name: :index_sample_types_on_name
+      end
+      if index_name_exists? :sample_groups, :index_sample_groups_on_name
+        remove_index :sample_groups, name: :index_sample_groups_on_name
+      end
+      if index_name_exists? :sample_custom_fields,
+                            :index_sample_custom_fields_on_value
+        remove_index :sample_custom_fields,
+                     name: :index_sample_custom_fields_on_value
+      end
+      if index_name_exists? :steps, :index_steps_on_name
+        remove_index :steps, name: :index_steps_on_name
+      end
+      if index_name_exists? :steps, :index_steps_on_description
+        remove_index :steps, name: :index_steps_on_description
+      end
+      if index_name_exists? :checklists, :index_checklists_on_name
+        remove_index :checklists, name: :index_checklists_on_name
+      end
+      if index_name_exists? :checklist_items, :index_checklist_items_on_text
+        remove_index :checklist_items, name: :index_checklist_items_on_text
+      end
+      if index_name_exists? :tables, :index_tables_on_name
+        remove_index :tables, name: :index_tables_on_name
+      end
+      if index_name_exists? :users, :index_users_on_full_name
+        remove_index :users, name: :index_users_on_full_name
+      end
+      if index_name_exists? :comments, :index_comments_on_message
+        remove_index :comments, name: :index_comments_on_message
+      end
+      if index_name_exists? :comments, :index_comments_on_type
+        remove_index :comments, name: :index_comments_on_type
+      end
+      if index_name_exists? :protocols, :index_protocols_on_protocol_type
+        remove_index :protocols, name: :index_protocols_on_protocol_type
+      end
+      if index_name_exists? :checklists, :index_checklists_on_step_id
+        remove_index :checklists, name: :index_checklists_on_step_id
       end
-      remove_index :checklists, :step_id if index_exists?(:checklists, :step_id)
 
       execute(
         "CREATE OR REPLACE FUNCTION
diff --git a/db/migrate/20170407104322_remove_default_checklist_item_position_value.rb b/db/migrate/20170407104322_remove_default_checklist_item_position_value.rb
index 1ca021449..8807cbd4d 100644
--- a/db/migrate/20170407104322_remove_default_checklist_item_position_value.rb
+++ b/db/migrate/20170407104322_remove_default_checklist_item_position_value.rb
@@ -1,4 +1,4 @@
-class RemoveDefaultChecklistItemPositionValue < ActiveRecord::Migration
+class RemoveDefaultChecklistItemPositionValue < ActiveRecord::Migration[4.2]
   def up
     change_column :checklist_items,
                   :position,
diff --git a/db/migrate/20170418153541_add_experiment_to_activities.rb b/db/migrate/20170418153541_add_experiment_to_activities.rb
index 58ef688e0..03042c788 100644
--- a/db/migrate/20170418153541_add_experiment_to_activities.rb
+++ b/db/migrate/20170418153541_add_experiment_to_activities.rb
@@ -1,4 +1,4 @@
-class AddExperimentToActivities < ActiveRecord::Migration
+class AddExperimentToActivities < ActiveRecord::Migration[4.2]
   def change
     add_reference :activities, :experiment, index: true, foreign_key: true
   end
diff --git a/db/migrate/20170420075905_add_attachment_image_to_tiny_mce_assets.rb b/db/migrate/20170420075905_add_attachment_image_to_tiny_mce_assets.rb
index 07eba08b3..0e38a78ee 100644
--- a/db/migrate/20170420075905_add_attachment_image_to_tiny_mce_assets.rb
+++ b/db/migrate/20170420075905_add_attachment_image_to_tiny_mce_assets.rb
@@ -1,4 +1,4 @@
-class AddAttachmentImageToTinyMceAssets < ActiveRecord::Migration
+class AddAttachmentImageToTinyMceAssets < ActiveRecord::Migration[4.2]
   def change
     create_table :tiny_mce_assets do |t|
       t.attachment :image
diff --git a/db/migrate/20170515073041_add_experiments_order_to_projects.rb b/db/migrate/20170515073041_add_experiments_order_to_projects.rb
index 173f0a271..693980a74 100644
--- a/db/migrate/20170515073041_add_experiments_order_to_projects.rb
+++ b/db/migrate/20170515073041_add_experiments_order_to_projects.rb
@@ -1,4 +1,4 @@
-class AddExperimentsOrderToProjects < ActiveRecord::Migration
+class AddExperimentsOrderToProjects < ActiveRecord::Migration[4.2]
   def change
     add_column :projects, :experiments_order, :string
   end
diff --git a/db/migrate/20170515141252_add_custom_repositories.rb b/db/migrate/20170515141252_add_custom_repositories.rb
index 2fe559f4f..f62de9b58 100644
--- a/db/migrate/20170515141252_add_custom_repositories.rb
+++ b/db/migrate/20170515141252_add_custom_repositories.rb
@@ -1,4 +1,4 @@
-class AddCustomRepositories < ActiveRecord::Migration
+class AddCustomRepositories < ActiveRecord::Migration[4.2]
   def change
     create_table :repositories do |t|
       t.belongs_to :team, index: true