diff --git a/scouter/activities/redis.py b/scouter/activities/redis.py
index 9bad871..5174d87 100644
--- a/scouter/activities/redis.py
+++ b/scouter/activities/redis.py
@@ -75,7 +75,7 @@ class Redis(RedisBase):
         )
 
         try:
-            self.set(key, last_data_timestamp, ttl=None)
+            self.set(key, last_data_timestamp, ttl=60*60*5)
         except Exception as e:
             self.send_notification(
                 metadata=metadata,