diff --git a/google/pubsub/v1/pubsub_gapic.yaml b/google/pubsub/v1/pubsub_gapic.yaml
index 09cbc156..ce966247 100644
--- a/google/pubsub/v1/pubsub_gapic.yaml
+++ b/google/pubsub/v1/pubsub_gapic.yaml
@@ -21,7 +21,7 @@ language_settings:
       google.pubsub.v1.Subscriber: SubscriberServiceApi
     release_level: GA
   ruby:
-    package_name: Google::Cloud::Pubsub::V1
+    package_name: Google::Cloud::PubSub::V1
     release_level: BETA
   php:
     package_name: Google\Cloud\PubSub\V1