diff --git a/examples/server/oauth-keycloak/Dockerfile b/examples/server/oauth-keycloak/Dockerfile
index f877c73a..cab3cf95 100644
--- a/examples/server/oauth-keycloak/Dockerfile
+++ b/examples/server/oauth-keycloak/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.1-fpm-alpine
+FROM php:8.5-fpm-alpine
 
 # Install dependencies
 RUN apk add --no-cache \
@@ -12,9 +12,6 @@ COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
 # Set working directory
 WORKDIR /app
 
-# Install PHP extensions
-RUN docker-php-ext-install opcache
-
 # Configure PHP-FPM to listen on TCP
 RUN sed -i 's/listen = .*/listen = 9000/' /usr/local/etc/php-fpm.d/www.conf
 
diff --git a/examples/server/oauth-microsoft/Dockerfile b/examples/server/oauth-microsoft/Dockerfile
index f877c73a..cab3cf95 100644
--- a/examples/server/oauth-microsoft/Dockerfile
+++ b/examples/server/oauth-microsoft/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.1-fpm-alpine
+FROM php:8.5-fpm-alpine
 
 # Install dependencies
 RUN apk add --no-cache \
@@ -12,9 +12,6 @@ COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
 # Set working directory
 WORKDIR /app
 
-# Install PHP extensions
-RUN docker-php-ext-install opcache
-
 # Configure PHP-FPM to listen on TCP
 RUN sed -i 's/listen = .*/listen = 9000/' /usr/local/etc/php-fpm.d/www.conf