diff --git a/docs/gitlab-ci.yml b/docs/gitlab-ci.yml
index 4d4bac680ee..cba1d51ff3f 100644
--- a/docs/gitlab-ci.yml
+++ b/docs/gitlab-ci.yml
@@ -8,7 +8,7 @@
     paths:
     - public/
   script:
-  - apk --no-cache add graphviz py3-clang clang-dev musl-dev linux-headers
+  - apk --no-cache add coreutils graphviz py3-clang clang-dev musl-dev linux-headers
   - pip3 install sphinx===5.1.1 mako===1.2.3 hawkmoth===0.16.0
   - sphinx-build -W -b $BUILDER docs public