diff --git a/bin/tests/system/serve-stale/tests_sh_serve_stale.py b/bin/tests/system/serve-stale/tests_sh_serve_stale.py
index 18b84e8b79..b55336d2b6 100644
--- a/bin/tests/system/serve-stale/tests_sh_serve_stale.py
+++ b/bin/tests/system/serve-stale/tests_sh_serve_stale.py
@@ -11,6 +11,8 @@
 
 import pytest
 
+import isctest.mark
+
 pytestmark = pytest.mark.extra_artifacts(
     [
         "dig.out.*",
@@ -24,5 +26,6 @@ pytestmark = pytest.mark.extra_artifacts(
 )
 
 
+@isctest.mark.flaky(max_runs=2)
 def test_serve_stale(run_tests_sh):
     run_tests_sh()