diff --git a/package.json b/package.json
index 00ce0143a..44b9f2a5e 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
   "dependencies": {
     "fast-deep-equal": "^3.1.1",
     "functional-red-black-tree": "^1.0.1",
-    "google-gax": "^3.5.7",
+    "google-gax": "^4.0.0",
     "protobufjs": "^7.0.0"
   },
   "devDependencies": {