diff --git a/services/prometheus.hcl b/services/prometheus.hcl
index 4d6afa1..5e12ee6 100644
--- a/services/prometheus.hcl
+++ b/services/prometheus.hcl
@@ -28,7 +28,7 @@ job "prometheus" {
         args = [
           "--storage.tsdb.path", "/opt/prometheus",
           "--web.listen-address", "0.0.0.0:9090",
-          "--storage.tsdb.retention.time", "90d",
+          "--storage.tsdb.retention.time", "30d",
           "--web.enable-admin-api"
         ]
         force_pull = true