diff --git a/config/initializers/constants.rb b/config/initializers/constants.rb
index eb07e9677..40c98de8e 100644
--- a/config/initializers/constants.rb
+++ b/config/initializers/constants.rb
@@ -213,7 +213,7 @@ class Constants
 
   WHITELISTED_TAGS = %w(
     a b strong i em li ul ol h1 del ins h2 h3 h4 h5 h6 br sub sup p code hr div
-    span u s blockquote pre
+    span u s blockquote pre col colgroup table thead tbody th tr td
   ).freeze
 
   WHITELISTED_ATTRIBUTES = %w(