diff --git a/extensions/html/package.json b/extensions/html/package.json
index 7c6e97305a164..c8525093d01d5 100644
--- a/extensions/html/package.json
+++ b/extensions/html/package.json
@@ -24,6 +24,7 @@
       {
         "id": "html",
         "extensions": [
+          ".rhtml",
           ".html",
           ".htm",
           ".shtml",