diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8939fe8e..c1f44a8f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ test:7:
       - apk add --no-cache php7-phpdbg
       - curl -sS https://getcomposer.org/installer | php
       - php composer.phar install --ignore-platform-reqs
-    image: php:7.0-cli-alpine
+    image: php:7.0-cli-alpine3.4
     script:
       - phpdbg -qrr -- ./vendor/bin/phpunit --coverage-text --colors=never
 
@@ -16,6 +16,6 @@ test:7.1:
       - apk add --no-cache php7-phpdbg
       - curl -sS https://getcomposer.org/installer | php
       - php composer.phar install --ignore-platform-reqs
-    image: php:7.1-cli-alpine
+    image: php:7.1-cli-alpine3.4
     script:
       - phpdbg -qrr -- ./vendor/bin/phpunit --coverage-text --colors=never
diff --git a/build/docker_install.sh b/build/docker_install.sh
index 6ca77250..5dab2200 100644
--- a/build/docker_install.sh
+++ b/build/docker_install.sh
@@ -6,7 +6,7 @@
 set -xe
 
 # Install git (the php image doesn't have it) which is required by composer
-#echo -e 'http://dl-cdn.alpinelinux.org/alpine/edge/main\nhttp://dl-cdn.alpinelinux.org/alpine/edge/community\nhttp://dl-cdn.alpinelinux.org/alpine/edge/testing' > /etc/apk/repositories
+echo -e 'http://dl-cdn.alpinelinux.org/alpine/edge/main\nhttp://dl-cdn.alpinelinux.org/alpine/edge/community\nhttp://dl-cdn.alpinelinux.org/alpine/edge/testing' > /etc/apk/repositories
 apk upgrade --update && apk add --no-cache \
 	curl \
 	git