diff --git a/build/docker_install.sh b/build/docker_install.sh
index 0a52b6f..6df1353 100644
--- a/build/docker_install.sh
+++ b/build/docker_install.sh
@@ -16,6 +16,7 @@ apk upgrade --update && apk add --no-cache \
 	libmemcached
 	
 docker-php-source extract
-pecl install apcu memcached
+pecl install apcu-5.1.8 
+pecl install memcached-3.0.3
 docker-php-ext-enable apcu memcached
 docker-php-source delete