diff --git a/tests/wrappers_tests/test_send_e2e_part3.py b/tests/wrappers_tests/test_send_e2e_part3.py
index f3968a9a9..c8de09bc3 100644
--- a/tests/wrappers_tests/test_send_e2e_part3.py
+++ b/tests/wrappers_tests/test_send_e2e_part3.py
@@ -174,6 +174,7 @@ _SEND_AFTER_DESTROY_SUBPROCESS_SCRIPT = textwrap.dedent(
 class TestS01NilOrUninitializedHandle(StepsCommon):
     """S01 — send() on a nil/destroyed handle must Err, no events, no crash."""
 
+    @pytest.mark.xfail(reason="see https://github.com/logos-messaging/logos-delivery/issues/3863")
     def test_s01_send_on_uninitialized_handle(self):
         completed = subprocess.run(
             [sys.executable, "-c", _S01_SUBPROCESS_SCRIPT],