diff --git a/gittensor/validator/storage/repository.py b/gittensor/validator/storage/repository.py
index 2a6f8fe6..ea6d2c19 100644
--- a/gittensor/validator/storage/repository.py
+++ b/gittensor/validator/storage/repository.py
@@ -8,6 +8,7 @@
 
 import logging
 from contextlib import contextmanager
+from datetime import datetime, timezone
 from typing import List, TypeVar
 
 import numpy as np
@@ -122,6 +123,8 @@ def cleanup_stale_miner_data(self, evaluation: MinerEvaluation) -> None:
         if not evaluation.github_id or evaluation.github_id == '0':
             return
 
+        evaluation.evaluation_timestamp = datetime.now(timezone.utc)
+
         params = (evaluation.github_id, evaluation.uid, evaluation.hotkey)
         eval_params = params + (evaluation.evaluation_timestamp,)