diff --git a/functions/pubsub/package.json b/functions/pubsub/package.json
index 2d20824b0e..fc4e342d15 100644
--- a/functions/pubsub/package.json
+++ b/functions/pubsub/package.json
@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "@google-cloud/pubsub": "0.16.4",
-    "safe-buffer": "5.1.1"
+    "safe-buffer": "5.2.1"
   },
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "2.2.1",