diff --git a/test/test_limits.py b/test/test_limits.py
index bb554d68..e04afaa9 100644
--- a/test/test_limits.py
+++ b/test/test_limits.py
@@ -160,6 +160,7 @@ def test_auto_max_array_len():
 
 
 @pytest.mark.skipif(IS_FREE_THREADED_BUILD, reason="Skipped on free-threaded build")
+@pytest.mark.thread_unsafe
 def test_nest_limit_1024():
     import sys