diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 66813c814..5f82e58e5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -212,7 +212,7 @@ amd64-musl:
   cache: *release-cache
   variables: *release-variables
   before_script: &before-release-musl
-  - apk add git gcc g++ musl-dev make
+  - apk add git gcc g++ musl-dev make cmake
   - echo "import Mix.Config" > config/prod.secret.exs
   - mix local.hex --force
   - mix local.rebar --force
diff --git a/Dockerfile b/Dockerfile
index 0f4fcd0bb..aa50e27ec 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ COPY . .
 
 ENV MIX_ENV=prod
 
-RUN apk add git gcc g++ musl-dev make &&\
+RUN apk add git gcc g++ musl-dev make cmake &&\
 	echo "import Mix.Config" > config/prod.secret.exs &&\
 	mix local.hex --force &&\
 	mix local.rebar --force &&\