diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ef2be70..ef3d42a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,4 +6,5 @@ stages:
 build:
   stage: build
   script:
+    - apk add --update cmake
     - mkdir -p build bin debug && cd build && cmake -DCMAKE_BUILD_TYPE=Release .. && make -j