diff --git a/src/index.ts b/src/index.ts
index 6b95a9198..5ff837833 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -104,6 +104,7 @@ export {
   ExistsCallback,
   ExistsResponse,
   PubSub,
+  ClientConfig,
 } from './pubsub';
 export {
   CreateSnapshotCallback,