diff --git a/build.sbt b/build.sbt
index c6c2be85..1b73d8b0 100644
--- a/build.sbt
+++ b/build.sbt
@@ -193,7 +193,7 @@ lazy val hwacha = (project in file("generators/hwacha"))
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
 
-lazy val boom = (project in file("generators/boom"))
+lazy val boom = freshProject("boom", file("generators/boom"))
   .dependsOn(rocketchip)
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
diff --git a/generators/boom b/generators/boom
index 1a153d49..49798ded 160000
--- a/generators/boom
+++ b/generators/boom
@@ -1 +1 @@
-Subproject commit 1a153d4974977a2d5f8baa9b4de51b3337d230fe
+Subproject commit 49798deda7aada703fbc5e2479000d6c73ebb85a