diff --git a/devapp/Dockerfile b/devapp/Dockerfile
index 6fd0827..df67e4f 100644
--- a/devapp/Dockerfile
+++ b/devapp/Dockerfile
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
-FROM golang:1.17 AS builder
+FROM golang:1.19 AS builder
 LABEL maintainer="golang-dev@googlegroups.com"
 
 RUN mkdir /gocache
diff --git a/devapp/README.md b/devapp/README.md
index 32f5871..f830e7a 100644
--- a/devapp/README.md
+++ b/devapp/README.md
@@ -3,10 +3,10 @@
 ## Local development
 
 ```sh
-$ go run . -listen-http localhost:6343
+$ go run . -listen-http=localhost:8080
 ```
 
-Then visit http://localhost:6343 in your browser.
+Then visit http://localhost:8080/ in your browser.
 
 ## Deployment