diff --git a/Dockerfile b/Dockerfile
index 72982b6..9ee9880 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,7 +32,7 @@ RUN chown -R appuser:appgroup /app
 
 USER appuser
 ENV NODE_ENV=production
-EXPOSE 3000
+EXPOSE 4000
 
 CMD ["npm", "start"]