diff --git a/.build.yml b/.build.yml
index 5ba9a1d..56858d1 100644
--- a/.build.yml
+++ b/.build.yml
@@ -1,4 +1,6 @@
 image: freebsd/latest
+environment:
+  RUSTFLAGS: -D warnings
 sources:
   - https://git.sr.ht/~spicywolf/k2spice
 tasks: