diff --git a/src/monitoring_proxy/metrics.py b/src/monitoring_proxy/metrics.py
index 90b53a4..0979b3c 100644
--- a/src/monitoring_proxy/metrics.py
+++ b/src/monitoring_proxy/metrics.py
@@ -46,10 +46,8 @@ async def get_recent_metrics_age(api_url_prefix: str, now: datetime) -> timedelt
     Get the age of the most recent metrics from the specified `pyaleph` node.
     """
     recent_metrics = await get_recent_metrics(api_url_prefix)
-    print(recent_metrics)
     signed_timestamp: float = recent_metrics[0]["content"]["time"]
     signed_datetime = datetime.fromtimestamp(signed_timestamp, tz=timezone.utc)
-    print("Z", now, signed_datetime, recent_metrics[0]["content"]["time"])
     return now - signed_datetime
 
 
diff --git a/tests/test_metrics.py b/tests/test_metrics.py
index 34ee4f1..42271fd 100644
--- a/tests/test_metrics.py
+++ b/tests/test_metrics.py
@@ -1,5 +1,5 @@
 from datetime import datetime, timedelta, timezone
-from unittest.mock import AsyncMock, patch
+from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 from aioresponses import aioresponses
@@ -74,8 +74,15 @@ async def test_returns_metrics_age_by_node():
         {"content": {"time": (now - timedelta(minutes=30)).timestamp()}}
     ]
 
+    def mock_now(tz=None):
+        return now
+
+    mock_datetime = MagicMock(now=mock_now)
+    mock_datetime.fromtimestamp = datetime.fromtimestamp
+
     with patch("monitoring_proxy.metrics.get_recent_metrics", new=async_mock):
-        metrics_age = await get_metrics_age_by_node()
+        with patch("monitoring_proxy.metrics.datetime", new=mock_datetime):
+            metrics_age = await get_metrics_age_by_node()
 
     assert metrics_age.acceptable
     assert metrics_age.scoring_node < 5400