diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index a52229e5..01f5a979 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1466,6 +1466,7 @@ XML:
   - .ditaval
   - .glade
   - .grxml
+  - .jelly
   - .kml
   - .mxml
   - .plist