diff --git a/package.json b/package.json
index 3f2c2d81..7d93283d 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   },
   "dependencies": {
     "@google-cloud/projectify": "^0.3.2",
-    "@google-cloud/promisify": "^0.3.0",
+    "@google-cloud/promisify": "^0.4.0",
     "@types/duplexify": "^3.5.0",
     "@types/request": "^2.47.0",
     "arrify": "^1.0.1",