diff --git a/docker-compose.yaml b/docker-compose.yaml
index 8d60db5..e9764c7 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -13,6 +13,7 @@ services:
       - --web.console.libraries=/usr/share/prometheus/console_libraries
       - --web.console.templates=/usr/share/prometheus/consoles
       - --web.enable-admin-api
+      - --storage.tsdb.retention.time=180d
     volumes:
       - prometheus:/prometheus
       - ./files/prometheus:/etc/prometheus