diff --git a/tests/test_connection.py b/tests/test_connection.py
index 7a9b9dd4..3d753b5e 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -41,6 +41,7 @@ def test_release(self):
             conn.signout(session_id)
             resp = conn.execute(session_id, 'SHOW SPACES')
             assert resp.error_code != ttypes.ErrorCode.SUCCEEDED
+            conn.close()
         except Exception as ex:
             assert False, ex