diff --git a/build.sbt b/build.sbt
index 9d4e98d..f8cc2af 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,10 +1,10 @@
 // See README.md for license details.
 
-ThisBuild / scalaVersion     := "2.13.12"
+ThisBuild / scalaVersion     := "2.13.15"
 ThisBuild / version          := "0.1.0"
 ThisBuild / organization     := "%ORGANIZATION%"
 
-val chiselVersion = "6.2.0"
+val chiselVersion = "6.6.0"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/build.sc b/build.sc
index 30badf0..20bfb1a 100644
--- a/build.sc
+++ b/build.sc
@@ -9,7 +9,7 @@ import mill.bsp._
 
 object %NAME% extends SbtModule { m =>
   override def millSourcePath = os.pwd
-  override def scalaVersion = "2.13.12"
+  override def scalaVersion = "2.13.15"
   override def scalacOptions = Seq(
     "-language:reflectiveCalls",
     "-deprecation",
@@ -17,10 +17,10 @@ object %NAME% extends SbtModule { m =>
     "-Xcheckinit",
   )
   override def ivyDeps = Agg(
-    ivy"org.chipsalliance::chisel:6.2.0",
+    ivy"org.chipsalliance::chisel:6.6.0",
   )
   override def scalacPluginIvyDeps = Agg(
-    ivy"org.chipsalliance:::chisel-plugin:6.2.0",
+    ivy"org.chipsalliance:::chisel-plugin:6.6.0",
   )
   object test extends SbtModuleTests with TestModule.ScalaTest {
     override def ivyDeps = m.ivyDeps() ++ Agg(