diff --git a/config/initializers/sanitization.rb b/config/initializers/sanitization.rb
index 93323bc4a..a898a64b3 100644
--- a/config/initializers/sanitization.rb
+++ b/config/initializers/sanitization.rb
@@ -1,4 +1,7 @@
 Rails.application.config.after_initialize do
   Rails::HTML5::SafeListSanitizer.allowed_tags.merge(%w[ s table tr td th thead tbody details summary video source])
   Rails::HTML5::SafeListSanitizer.allowed_attributes.merge(%w[ data-turbo-frame controls type width data-action data-lightbox-target data-lightbox-url-value ])
+
+  ActionText::ContentHelper.allowed_tags = Rails::HTML5::SafeListSanitizer.allowed_tags
+  ActionText::ContentHelper.allowed_attributes = Rails::HTML5::SafeListSanitizer.allowed_attributes
 end