diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index 735720a..8ee3667 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -40,4 +40,4 @@
   vars:
     args:
       - name: web.listen-address
-        value: "{{ lan_address }}:9100"
+        value: "{{ lan_address }}:9090"