diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 66c60a265df74db92823fd74041a3a5eb877d9db..d2866c8c4558825faee3aa4a0c08044b7d82cdc6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -58,6 +58,9 @@ phpunit:
 
 composer-require-checker:
   <<: *test
+  before_script:
+    - apt-get update -yqq && apt-get install -yqq zlib1g-dev
+    - docker-php-ext-install -j$(nproc) zip
   script: vendor/bin/composer test:composer-require-checker
 
 phpmd: