diff --git a/.build.yml b/.build.yml
index f84bfe4..acf7c79 100644
--- a/.build.yml
+++ b/.build.yml
@@ -6,6 +6,7 @@ packages:
   - libxkbcommon-dev
   - pango-dev
   - scdoc
+  - clang-format # needed for formatting
 sources:
   - https://git.sr.ht/~proycon/wvkbd
 triggers: