diff --git a/functions/firebase/package.json b/functions/firebase/package.json
index 7bc503352c..5c6dc80189 100644
--- a/functions/firebase/package.json
+++ b/functions/firebase/package.json
@@ -23,6 +23,6 @@
     "uuid": "^3.1.0"
   },
   "dependencies": {
-    "@google-cloud/firestore": "^0.19.0"
+    "@google-cloud/firestore": "^0.21.0"
   }
 }
diff --git a/functions/node8/package.json b/functions/node8/package.json
index dbeff376d5..7609d89e34 100644
--- a/functions/node8/package.json
+++ b/functions/node8/package.json
@@ -25,7 +25,7 @@
     "uuid": "^3.3.2"
   },
   "dependencies": {
-    "@google-cloud/firestore": "^0.19.0",
+    "@google-cloud/firestore": "^0.21.0",
     "escape-html": "^1.0.3",
     "node-fetch": "^2.3.0"
   }