diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index acc55a8..557e008 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,7 +23,8 @@ test:7:
 test:7.1:
     before_script:
       - sh build/docker_install.sh > /dev/null
-      - apk add --no-cache php7.1-phpdbg
+      - apk add --no-cache php7.1-apcu php7.1-memcached php7.1-phpdbg
+      - echo '\nextension=apcu.so\nextension=memcached.so' >> /etc/php7.1/php.ini
       - curl -sS https://getcomposer.org/installer | php
       - php composer.phar install --ignore-platform-reqs
     image: php:7.1-alpine