diff --git a/contrib/local-environment/docker-compose-nginx.yaml b/contrib/local-environment/docker-compose-nginx.yaml
index 339b5690..771815b1 100644
--- a/contrib/local-environment/docker-compose-nginx.yaml
+++ b/contrib/local-environment/docker-compose-nginx.yaml
@@ -19,7 +19,7 @@
 #    127.0.0.1 oauth2-proxy.localhost
 #    127.0.0.1 httpbin.oauth2-proxy.localhost
 #    127.0.0.1 oauth2-proxy.oauth2-proxy.localhost
-version: '3.0'
+version: "3.0"
 services:
   oauth2-proxy:
     image: quay.io/oauth2-proxy/oauth2-proxy:v7.14.2
@@ -62,7 +62,7 @@ services:
       - "./dex.yaml:/dex.yaml"
     restart: unless-stopped
     ports:
-      - 5556:4181/tcp
+      - 5556:5556/tcp
     networks:
       dex:
         aliases: