diff --git a/test/registered/ep/test_mooncake_ep_small.py b/test/registered/ep/test_mooncake_ep_small.py
index ce87eed14..44fe4882d 100644
--- a/test/registered/ep/test_mooncake_ep_small.py
+++ b/test/registered/ep/test_mooncake_ep_small.py
@@ -83,6 +83,7 @@ class TestTP(CustomTestCase):
         self.assertGreater(metrics["accuracy"], 0.60)
 
 
+@unittest.skipIf(is_in_ci(), "Skip since mooncake-ep fault-tolerant test is flaky.")
 class TestPureDP(TestTP):
     extra_args = [
         "--enable-dp-attention",