diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2bb8e9b..e5e3199 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ cache:
 tests:
   before_script:
     - python -V
-    - apk --update add --no-cache build-base gcc libgcc
+    - apk --update add --no-cache build-base gcc libgcc libffi-dev openssl-dev
     - pip3 install pipenv wheel tox
     - pipenv install --dev
   script: