diff --git a/docker-compose.yml b/docker-compose.yml
index e1d56d1..5f3346e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,6 +7,7 @@ networks:
 
 volumes:
   grafana_data: { }
+  prometheus_data: { }
 
 services:
   alertmanager:
@@ -140,6 +141,7 @@ services:
 
     volumes:
       - ./prometheus:/etc/prometheus
+      - prometheus_data:/prometheus
     command:
       - '--config.file=/etc/prometheus/prometheus.yml'
       - '--storage.tsdb.path=/prometheus'