diff --git a/tests/test_support_modules.py b/tests/test_support_modules.py
index 22a28b6..0a322f4 100644
--- a/tests/test_support_modules.py
+++ b/tests/test_support_modules.py
@@ -430,6 +430,7 @@ def test_state_store_roundtrip_and_cleanup(tmp_path: Path, monkeypatch: pytest.M
 
     path = tmp_path / "state.db"
     store = ClaimStore(str(path), 60)
+    monkeypatch.setattr("atlasbot.state.store.time.monotonic", lambda: 1_000_000.0)
     store.set(
         "conv",
         {
@@ -442,7 +443,7 @@ def test_state_store_roundtrip_and_cleanup(tmp_path: Path, monkeypatch: pytest.M
     assert payload and payload["snapshot_id"] == "snap-1"
     assert payload["claims"] == [{"id": "c1"}]
     assert _safe_json("{broken", []) == []
-    monkeypatch.setattr("atlasbot.state.store.time.monotonic", lambda: 1_000_000.0)
+    monkeypatch.setattr("atlasbot.state.store.time.monotonic", lambda: 1_000_120.0)
     store.cleanup()
     assert store.get("conv") is None