diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c9ab84892..66813c814 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,6 +22,7 @@ stages:
   - docker
 
 before_script:
+  - apt-get update && apt-get install -y cmake
   - mix local.hex --force
   - mix local.rebar --force