diff --git a/sdk/schemaregistry/azure-schemaregistry-avroserializer/CHANGELOG.md b/sdk/schemaregistry/azure-schemaregistry-avroserializer/CHANGELOG.md
index b012ab285e5e..bb68048281be 100644
--- a/sdk/schemaregistry/azure-schemaregistry-avroserializer/CHANGELOG.md
+++ b/sdk/schemaregistry/azure-schemaregistry-avroserializer/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## 1.0.0b2 (Unreleased)
 
+**Notes**
+
+`azure.schemaregistry.serializer` is now a namespace package.
 
 ## 1.0.0b1 (2020-09-09)
 
diff --git a/sdk/schemaregistry/azure-schemaregistry/azure/schemaregistry/serializer/__init__.py b/sdk/schemaregistry/azure-schemaregistry/azure/schemaregistry/serializer/__init__.py
index c36aaed14908..80f86cb969ec 100644
--- a/sdk/schemaregistry/azure-schemaregistry/azure/schemaregistry/serializer/__init__.py
+++ b/sdk/schemaregistry/azure-schemaregistry/azure/schemaregistry/serializer/__init__.py
@@ -23,3 +23,4 @@
 # IN THE SOFTWARE.
 #
 # --------------------------------------------------------------------------
+__path__ = __import__("pkgutil").extend_path(__path__, __name__)  # type: ignore