diff --git a/fastapi_sqla/_pytest_plugin.py b/fastapi_sqla/_pytest_plugin.py
index bd143942..6dd08dea 100644
--- a/fastapi_sqla/_pytest_plugin.py
+++ b/fastapi_sqla/_pytest_plugin.py
@@ -153,7 +153,9 @@ def async_sqlalchemy_url(db_url):
 
     @fixture
     def async_engine(async_sqlalchemy_url):
-        return create_async_engine(async_sqlalchemy_url)
+        engine = create_async_engine(async_sqlalchemy_url)
+        yield engine
+        engine.dispose()
 
     @fixture
     async def async_sqla_connection(async_engine):