diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 03ba6457fca..207643da3ed 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -2394,6 +2394,7 @@ en:
     default_sidebar_tags: "Selected tags will be displayed under Sidebar's Tags section by default."
     enable_new_user_profile_nav_groups: "EXPERIMENTAL: Users of the selected groups will be shown the new user profile navigation menu"
     enable_experimental_topic_timeline_groups: "EXPERIMENTAL: Users of the selected groups will be shown the refactored topic timeline"
+    enable_experimental_hashtag_autocomplete: "EXPERIMENTAL: Use the new #hashtag autocompletion system for categories and tags that renders the selected item differently and has improved search"
 
     errors:
       invalid_css_color: "Invalid color. Enter a color name or hex value."