diff --git a/graphene_django/__init__.py b/graphene_django/__init__.py
index ac15e35..a50b124 100644
--- a/graphene_django/__init__.py
+++ b/graphene_django/__init__.py
@@ -1,5 +1,5 @@
 from .fields import DjangoConnectionField, DjangoListField
-from .types import DjangoObjectType
+from .types import DjangoObjectType, DjangoUnionType
 from .utils import bypass_get_queryset
 
 __version__ = "3.2.2"
@@ -7,6 +7,7 @@ __version__ = "3.2.2"
 __all__ = [
     "__version__",
     "DjangoObjectType",
+    "DjangoUnionType",
     "DjangoListField",
     "DjangoConnectionField",
     "bypass_get_queryset",