diff --git a/custom/gatus/config.yaml b/custom/gatus/config.yaml
index 96d73dc..7faa2da 100644
--- a/custom/gatus/config.yaml
+++ b/custom/gatus/config.yaml
@@ -59,7 +59,7 @@ endpoints:
   - name: prometheus
     <<: *default-http
     group: utils
-    url: "http://prometheus"
+    url: "http://prometheus:9090"
 
   - name: shlink
     <<: *default