diff --git a/packages/google-cloud-monitoring/package.json b/packages/google-cloud-monitoring/package.json
index 3b594975b2e..8158e171431 100644
--- a/packages/google-cloud-monitoring/package.json
+++ b/packages/google-cloud-monitoring/package.json
@@ -54,7 +54,7 @@
   "dependencies": {
     "extend": "^3.0.0",
     "google-gax": "^0.10.0",
-    "google-proto-files": "^0.8.3"
+    "google-proto-files": "^0.9.1"
   },
   "devDependencies": {
     "mocha": "^3.1.2"