diff --git a/packages/pubsub/src/iam.js b/packages/pubsub/src/iam.js
index 036e5e8751a..30501f8471d 100644
--- a/packages/pubsub/src/iam.js
+++ b/packages/pubsub/src/iam.js
@@ -73,7 +73,8 @@ function IAM(pubsub, id) {
     scopes: [
       'https://www.googleapis.com/auth/pubsub',
       'https://www.googleapis.com/auth/cloud-platform'
-    ]
+    ],
+    packageJson: require('../package.json')
   };
 
   this.id = id;
diff --git a/packages/pubsub/test/iam.js b/packages/pubsub/test/iam.js
index dc394497ddb..d13eda5c7d3 100644
--- a/packages/pubsub/test/iam.js
+++ b/packages/pubsub/test/iam.js
@@ -65,6 +65,7 @@ describe('IAM', function() {
         'https://www.googleapis.com/auth/pubsub',
         'https://www.googleapis.com/auth/cloud-platform'
       ]);
+      assert.deepEqual(config.packageJson, require('../package.json'));
 
       assert.strictEqual(options, PUBSUB.options);
     });