diff --git a/Gemfile b/Gemfile
index 1effae4ea..a4908be78 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'devise_invitable'
 gem 'figaro'
 gem 'pg', '~> 0.18'
 gem 'pg_search' # PostgreSQL full text search
-gem 'rails', '5.1.6'
+gem 'rails', '~> 5.1.6.2'
 gem 'recaptcha', require: 'recaptcha/rails'
 gem 'sanitize', '~> 4.4'
 gem 'sass-rails', '~> 5.0.6'
diff --git a/Gemfile.lock b/Gemfile.lock
index caf0fcba1..97bb5ac2e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,25 +51,25 @@ GIT
 GEM
   remote: http://rubygems.org/
   specs:
-    actioncable (5.1.6)
-      actionpack (= 5.1.6)
+    actioncable (5.1.6.2)
+      actionpack (= 5.1.6.2)
       nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.1.6)
-      actionpack (= 5.1.6)
-      actionview (= 5.1.6)
-      activejob (= 5.1.6)
+    actionmailer (5.1.6.2)
+      actionpack (= 5.1.6.2)
+      actionview (= 5.1.6.2)
+      activejob (= 5.1.6.2)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.6)
-      actionview (= 5.1.6)
-      activesupport (= 5.1.6)
+    actionpack (5.1.6.2)
+      actionview (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.6)
-      activesupport (= 5.1.6)
+    actionview (5.1.6.2)
+      activesupport (= 5.1.6.2)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
@@ -79,18 +79,18 @@ GEM
       activemodel (>= 4.1, < 6)
       case_transform (>= 0.2)
       jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
-    activejob (5.1.6)
-      activesupport (= 5.1.6)
+    activejob (5.1.6.2)
+      activesupport (= 5.1.6.2)
       globalid (>= 0.3.6)
-    activemodel (5.1.6)
-      activesupport (= 5.1.6)
-    activerecord (5.1.6)
-      activemodel (= 5.1.6)
-      activesupport (= 5.1.6)
+    activemodel (5.1.6.2)
+      activesupport (= 5.1.6.2)
+    activerecord (5.1.6.2)
+      activemodel (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       arel (~> 8.0)
     activerecord-import (0.23.0)
       activerecord (>= 3.2)
-    activesupport (5.1.6)
+    activesupport (5.1.6.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -383,17 +383,17 @@ GEM
       rack (>= 1.0, < 3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.1.6)
-      actioncable (= 5.1.6)
-      actionmailer (= 5.1.6)
-      actionpack (= 5.1.6)
-      actionview (= 5.1.6)
-      activejob (= 5.1.6)
-      activemodel (= 5.1.6)
-      activerecord (= 5.1.6)
-      activesupport (= 5.1.6)
+    rails (5.1.6.2)
+      actioncable (= 5.1.6.2)
+      actionmailer (= 5.1.6.2)
+      actionpack (= 5.1.6.2)
+      actionview (= 5.1.6.2)
+      activejob (= 5.1.6.2)
+      activemodel (= 5.1.6.2)
+      activerecord (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       bundler (>= 1.3.0)
-      railties (= 5.1.6)
+      railties (= 5.1.6.2)
       sprockets-rails (>= 2.0.0)
     rails-controller-testing (1.0.2)
       actionpack (~> 5.x, >= 5.0.1)
@@ -411,14 +411,14 @@ GEM
       rails (> 3.1)
     rails_serve_static_assets (0.0.5)
     rails_stdout_logging (0.0.5)
-    railties (5.1.6)
-      actionpack (= 5.1.6)
-      activesupport (= 5.1.6)
+    railties (5.1.6.2)
+      actionpack (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (3.0.0)
-    rake (12.3.1)
+    rake (12.3.2)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -631,7 +631,7 @@ DEPENDENCIES
   pry-rails
   puma
   rack-attack
-  rails (= 5.1.6)
+  rails (~> 5.1.6.2)
   rails-controller-testing
   rails_12factor
   rails_autolink (~> 1.1, >= 1.1.6)