diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f358478..66f2309 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,7 +8,7 @@ before_script:
   - pip install mkdocs
   - pip install mkdocs-material
 
-  - apt-get install -y docker
+  - apk add docker
   - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
 
 pages: