diff --git a/ansible/roles/stack-monitor/defaults/main.yml b/ansible/roles/stack-monitor/defaults/main.yml
index d65672ea2dfcfb17be39d2609b74e93e34d2d55e..e67189b8b95a943c20b16186c1aa02b9e4118a8c 100644
--- a/ansible/roles/stack-monitor/defaults/main.yml
+++ b/ansible/roles/stack-monitor/defaults/main.yml
@@ -1,6 +1,6 @@
 prometheus_reservation_memory: 1G
 prometheus_limit_memory: 1G
-prometheus_storage_retention_time: 3d
+prometheus_storage_retention_time: 90d
 
 alertmanager_reservation_memory: 100M
 alertmanager_limit_memory: 100M