diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index be21159..401fc0e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,6 +16,7 @@ before_script:
   - apk add json-c-dev libmpdclient-dev alsa-lib-dev
   - apk add ttf-dejavu
   - apk add git
+  - apk add flex bison
 
 versions:
   stage: info