diff --git a/docs/requirements.txt b/docs/requirements.txt
index f2330dd94025..ba3c29f77a5d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -13,8 +13,10 @@ monitoring/
 pubsub/
 resource_manager/
 runtimeconfig/
+spanner/
 speech/
 storage/
+trace/
 translate/
+videointelligence/
 vision/
-spanner/
diff --git a/pubsub/setup.py b/pubsub/setup.py
index a8e17f6c48e1..5316b5363469 100644
--- a/pubsub/setup.py
+++ b/pubsub/setup.py
@@ -61,12 +61,16 @@
 
 setup(
     name='google-cloud-pubsub',
-    version='0.28.2',
+    version='0.28.3',
     description='Python Client for Google Cloud Pub/Sub',
     long_description=README,
     namespace_packages=[
         'google',
         'google.cloud',
+        'google.cloud.gapic',
+        'google.cloud.gapic.pubsub',
+        'google.cloud.proto',
+        'google.cloud.proto.pubsub',
     ],
     packages=find_packages(exclude=('tests*',)),
     install_requires=REQUIREMENTS,