diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e65cae9d8..06cf614c2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -217,7 +217,7 @@ amd64-musl:
   cache: *release-cache
   variables: *release-variables
   before_script: &before-release-musl
-  - apk add git gcc g++ musl-dev make cmake
+  - apk add git gcc g++ musl-dev make cmake file-dev
   - echo "import Mix.Config" > config/prod.secret.exs
   - mix local.hex --force
   - mix local.rebar --force