diff --git a/firestore.indexes.json b/firestore.indexes.json
index 874344be..80b08996 100644
--- a/firestore.indexes.json
+++ b/firestore.indexes.json
@@ -40,6 +40,10 @@
       "collectionGroup": "comments",
       "queryScope": "COLLECTION_GROUP",
       "fields": [
+        {
+          "fieldPath": "commentType",
+          "order": "ASCENDING"
+        },
         {
           "fieldPath": "userId",
           "order": "ASCENDING"