diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d514d34..0fb621b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,6 +14,10 @@ before_script:
   # Install & enable Xdebug for code coverage reports
   - pecl install xdebug
   - docker-php-ext-enable xdebug
+  - >
+    if [ "$CI_JOB_NAME" == "test:7.4" || "$CI_JOB_NAME" == "test:8.0" ]; then
+      pecl install ds && docker-php-ext-enable ds
+    fi
   # Install and run Composer
   - curl -sS https://getcomposer.org/installer | php
   - php composer.phar install
@@ -26,9 +30,6 @@ test:7.4:
   tags:
     - default
   image: php:7.4
-  before_script:
-    - pecl install ds
-    - docker-php-ext-enable ds
   script:
     - vendor/bin/phpunit --configuration phpunit.xml --coverage-text --colors=never
 test:7.4-without-ext-ds:
@@ -45,9 +46,6 @@ test:8.0:
   tags:
     - default
   image: php:8.0
-  before_script:
-    - pecl install ds
-    - docker-php-ext-enable ds
   script:
     - vendor/bin/phpunit --configuration phpunit.xml --coverage-text --colors=never
 test:8.0-without-ext-ds: