diff --git a/tests/webui/test_settings_api.py b/tests/webui/test_settings_api.py
index 8b3615222d3..da4bba9b88e 100644
--- a/tests/webui/test_settings_api.py
+++ b/tests/webui/test_settings_api.py
@@ -1319,7 +1319,10 @@ def test_settings_payload_includes_token_usage_summary(
 
     from nanobot.webui.token_usage import record_token_usage
 
-    record_token_usage({"prompt_tokens": 10, "completion_tokens": 5})
+    record_token_usage(
+        {"prompt_tokens": 10, "completion_tokens": 5},
+        timezone_name=config.agents.defaults.timezone,
+    )
 
     payload = settings_payload()
 
@@ -1344,7 +1347,10 @@ def test_settings_usage_payload_returns_lightweight_token_usage(
 
     from nanobot.webui.token_usage import record_token_usage
 
-    record_token_usage({"prompt_tokens": 20, "completion_tokens": 2})
+    record_token_usage(
+        {"prompt_tokens": 20, "completion_tokens": 2},
+        timezone_name=config.agents.defaults.timezone,
+    )
 
     payload = settings_usage_payload()