diff --git a/docker-compose.yml b/docker-compose.yml
index c5d18c4..f008700 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -66,6 +66,8 @@ services:
       - /var/lib/docker/:/var/lib/docker:ro
   prometheus:
     image: prom/prometheus
+    ports:
+      - "9090:9090"
     volumes:
       - ./prometheus.yml:/etc/prometheus/prometheus.yml
       - prometheus-tsdb:/prometheus