diff --git a/lib/test/container-test-driver/test_driver/__init__.py b/lib/test/container-test-driver/test_driver/__init__.py
index b17af3a8c..84a7fe908 100644
--- a/lib/test/container-test-driver/test_driver/__init__.py
+++ b/lib/test/container-test-driver/test_driver/__init__.py
@@ -50,7 +50,7 @@ def init_test_environment() -> None:
     passwd_content = """root:x:0:0:Root:/root:/bin/sh
 nixbld:x:1000:100:Nix build user:/tmp:/bin/sh
 nobody:x:65534:65534:Nobody:/:/bin/sh
-"""
+"""  # noqa: S105 - This is not a password, it's a Unix passwd file format for testing
 
     with NamedTemporaryFile(mode="w", delete=False, prefix="test-passwd-") as f:
         f.write(passwd_content)