diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index faf063b..15f59af 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,7 +9,7 @@ variables:
 before_script:
   - echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
   - apk update
-  - apk add musl-dev eudev-libs eudev-dev linux-headers cmake ninja gcc
+  - apk add musl-dev eudev-libs eudev-dev linux-headers cmake ninja gcc scdoc
   - apk add libxcb-dev xcb-util-wm-dev xcb-util-cursor-dev cairo-dev yaml-dev
   - apk add wayland-dev wayland-protocols wlroots-dev
   - apk add json-c-dev libmpdclient-dev alsa-lib-dev