diff --git a/examples/guestbook/frontend-controller.yaml b/examples/guestbook/frontend-controller.yaml
index 79d02d3e8f5..b9b8c40f199 100644
--- a/examples/guestbook/frontend-controller.yaml
+++ b/examples/guestbook/frontend-controller.yaml
@@ -24,7 +24,7 @@ spec:
     spec:
       containers:
       - name: php-redis
-        image: gcr.io/google_samples/gb-frontend:v3
+        image: gcr.io/google_samples/gb-frontend:v4
         resources:
           requests:
             cpu: 100m
diff --git a/examples/guestbook/php-redis/guestbook.php b/examples/guestbook/php-redis/guestbook.php
index 2ea63f0a0b0..ee0670ee69f 100644
--- a/examples/guestbook/php-redis/guestbook.php
+++ b/examples/guestbook/php-redis/guestbook.php
@@ -1,6 +1,4 @@
-<?
-
-set_include_path('.:/usr/local/lib/php');
+<?php
 
 error_reporting(E_ALL);
 ini_set('display_errors', 1);