diff --git a/xtuml/__init__.py b/xtuml/__init__.py
index <HASH>..<HASH> 100644
--- a/xtuml/__init__.py
+++ b/xtuml/__init__.py
@@ -13,6 +13,7 @@ from .persist import persist_schema
 
 from .persist import serialize_schema
 from .persist import serialize_class
+from .persist import serialize_association
 from .persist import serialize_instances
 from .persist import serialize_instance
xtuml: expose serialize_association to user