diff --git a/models/site.rb b/models/site.rb
index 74238300..ac39d8de 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -56,7 +56,7 @@ class Site < Sequel::Model
   }
 
   VALID_EDITABLE_EXTENSIONS = %w{
-    html htm txt js css scss md manifest less webmanifest xml json opml rdf svg gpg pgp resolveHandle pls yaml yml toml osdx mjs cjs ts py
+    html htm txt js css scss md manifest less webmanifest xml json opml rdf svg gpg pgp resolveHandle pls yaml yml toml osdx mjs cjs ts py rss
   }
 
   MINIMUM_PASSWORD_LENGTH = 5