diff --git a/tests/test_cli.py b/tests/test_cli.py
index 633bc4a..8a94ee6 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -13,7 +13,7 @@ def test_get_session_id_random(tmp_path: Path):
     args_resume = False
     args_session_id = None
     session_id = get_session_id(args_output_dir, args_resume, args_session_id)
-    assert re.search("\d+-\d+-\d+", session_id)
+    assert re.search(r"\d+-\d+-\d+", session_id)
 
 
 def test_get_session_id_explicit1(tmp_path: Path):