diff --git a/build.mill b/build.mill
index cb39ab9..f855b4d 100644
--- a/build.mill
+++ b/build.mill
@@ -10,7 +10,7 @@ import mill.scalalib.scalafmt.*
 object Dependencies {
   val scalaVersion = "2.13.16"
 
-  val chiselVersion = "7.0.0"
+  val chiselVersion = "7.3.0"
   val chisel        = mvn"org.chipsalliance::chisel:$chiselVersion"
   val chiselPlugin  = mvn"org.chipsalliance:::chisel-plugin:$chiselVersion"