diff --git a/packages/google-cloud-billing/package.json b/packages/google-cloud-billing/package.json
index 4b84bce085c..e8ad35f4062 100644
--- a/packages/google-cloud-billing/package.json
+++ b/packages/google-cloud-billing/package.json
@@ -27,7 +27,7 @@
     "precompile": "gts clean"
   },
   "dependencies": {
-    "google-gax": "^3.0.0"
+    "google-gax": "^3.3.0"
   },
   "devDependencies": {
     "@types/mocha": "^9.0.0",
diff --git a/packages/google-cloud-billing/protos/protos.d.ts b/packages/google-cloud-billing/protos/protos.d.ts
index 691850a7677..2b6bf3e69e7 100644
--- a/packages/google-cloud-billing/protos/protos.d.ts
+++ b/packages/google-cloud-billing/protos/protos.d.ts
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import Long = require("long");
-import {protobuf as $protobuf} from "google-gax";
+import type {protobuf as $protobuf} from "google-gax";
 /** Namespace google. */
 export namespace google {
 
diff --git a/packages/google-cloud-billing/protos/protos.js b/packages/google-cloud-billing/protos/protos.js
index 89103e8759f..ef31f67c9ac 100644
--- a/packages/google-cloud-billing/protos/protos.js
+++ b/packages/google-cloud-billing/protos/protos.js
@@ -19,7 +19,7 @@
         define(["protobufjs/minimal"], factory);
 
     /* CommonJS */ else if (typeof require === 'function' && typeof module === 'object' && module && module.exports)
-        module.exports = factory(require("google-gax").protobufMinimal);
+        module.exports = factory(require("google-gax/build/src/protobuf").protobufMinimal);
 
 })(this, function($protobuf) {
     "use strict";