diff --git a/build.sc b/build.sc
index 6874458771c826521221d70be87e72d7fc235399..7078edd69bb30bc005a3533c869f3dbf8d6d1fd8 100644
--- a/build.sc
+++ b/build.sc
@@ -25,8 +25,7 @@ trait HasXsource211 extends ScalaModule {
 
 trait HasChisel3 extends ScalaModule {
   override def ivyDeps = Agg(
-    //ivy"edu.berkeley.cs::chisel3:3.1.+"
-    ivy"edu.berkeley.cs::chisel3:3.2-SNAPSHOT"
+    ivy"edu.berkeley.cs::chisel3:3.2.0-RC1"
  )
 }
 
diff --git a/src/main/scala/top/TopMain.scala b/src/main/scala/top/TopMain.scala
index a137823a81c02440228ce88ad5de8fc086eea176..4156dec39bb44cf13189fad02b44207c79126027 100644
--- a/src/main/scala/top/TopMain.scala
+++ b/src/main/scala/top/TopMain.scala
@@ -6,7 +6,6 @@ import device.{AXI4Timer, AXI4VGA}
 import gpu._
 
 import chisel3._
-import chisel3.experimental.dontTouch
 
 class Top extends Module {
   val io = IO(new Bundle{})