diff --git a/compose.prometheus.yml b/compose.prometheus.yml
index db94c60..01f4de2 100644
--- a/compose.prometheus.yml
+++ b/compose.prometheus.yml
@@ -32,6 +32,7 @@ services:
         - "traefik.http.routers.${STACK_NAME}-prometheus.entrypoints=web-secure"
         - "traefik.http.routers.${STACK_NAME}-prometheus.tls=true"
         - "traefik.http.routers.${STACK_NAME}-prometheus.tls.certresolver=${LETS_ENCRYPT_ENV}"
+        - "traefik.http.routers.${STACK_NAME}-prometheus.middlewares=basicauth@file"
 
 configs:
   prometheus_yml: