diff --git a/build.mill b/build.mill
index a4ef52d..d6cd1b2 100644
--- a/build.mill
+++ b/build.mill
@@ -21,6 +21,7 @@ object %NAME% extends SbtModule { m =>
     "-deprecation",
     "-feature",
     "-Xcheckinit",
+    "-Ymacro-annotations",
   )
   override def ivyDeps = Agg(
     ivy"org.chipsalliance::chisel:7.0.0-RC1",