diff --git a/firebase.json b/firebase.json
index 9b1c36349..67936ab8f 100644
--- a/firebase.json
+++ b/firebase.json
@@ -22,11 +22,11 @@
         },
         {
           "key": "Access-Control-Allow-Headers",
-          "value": "Content-Type, Content-Length, Accept-Ranges, Range, Link, Transfer-Encoding"
+          "value": "Content-Type, Content-Length, Accept-Ranges, Content-Range, Range, Link, Transfer-Encoding"
         },
         {
           "key": "Access-Control-Expose-Headers",
-          "value": "Content-Type, Content-Length, Accept-Ranges, Range, Link, Transfer-Encoding"
+          "value": "Content-Type, Content-Length, Accept-Ranges, Content-Range, Range, Link, Transfer-Encoding"
         }
       ]
     }