diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 35d5124..6f3df9e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,6 +9,7 @@ debian:
 alpine:
     image: alpine:latest
     before_script:
+        - apk update
         - apk add make clang sdl2-dev sld2_mixer-dev
     script:
         - make CC=clang