diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 51397a4..831ed2a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,6 +32,7 @@ install:
   image: python:3.10-alpine
   stage: install
   script:
+    - apk add --no-cache gcc g++ yaml-dev python3-dev
     - python3 -m venv "${VIRTUAL_ENV}"
     - pip install -r requirements.txt
     - pip install .