diff --git a/.build.yml b/.build.yml
index 3fcf7fc..d6289f8 100644
--- a/.build.yml
+++ b/.build.yml
@@ -1,11 +1,13 @@
 image: alpine/edge
+packages:
+    - rustup
 
 sources:
   - https://git.sr.ht/~victormignot/yorokobot
 
 tasks: 
   - setup: |
-      apk add rustup
+      rustup toolchain install stable
       rustup default stable
   
   - format-check: |