diff --git a/tests/dragonfly/cluster_mgr_test.py b/tests/dragonfly/cluster_mgr_test.py
index c120f21c4..61c618a02 100644
--- a/tests/dragonfly/cluster_mgr_test.py
+++ b/tests/dragonfly/cluster_mgr_test.py
@@ -24,6 +24,7 @@ def run_cluster_mgr(args):
     return result.returncode == 0
 
 
+@pytest.mark.skip("it leaves an unclosed instance that fails other tests")
 @dfly_args({"proactor_threads": 2, "cluster_mode": "yes"})
 async def test_cluster_mgr(df_factory):
     NODES = 3