diff --git a/build.sbt b/build.sbt
index c0075e3..2427b9d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,7 +7,7 @@ resolvers ++= Seq(
   Resolver.sonatypeRepo("releases")
 )
 organization := "edu.berkeley.cs"
-version := "1.3-SNAPSHOT"
+version := "1.4-SNAPSHOT"
 autoAPIMappings := true
 scalaVersion := "2.12.10"
 crossScalaVersions := Seq("2.12.10", "2.11.12")
@@ -83,7 +83,7 @@ publishTo := {
 
 // Provide a managed dependency on X if -DXVersion="" is supplied on the command line.
 val defaultVersions = Map(
-  "chisel3" -> "3.4-SNAPSHOT"
+  "chisel3" -> "3.5-SNAPSHOT"
 )
 
 libraryDependencies ++= Seq("chisel3").map {
diff --git a/build.sc b/build.sc
index 9ee32dc..aa224db 100644
--- a/build.sc
+++ b/build.sc
@@ -15,7 +15,7 @@ trait CrossUnRootedSbtModule extends CrossSbtModule {
 }
 
 trait CommonModule extends CrossUnRootedSbtModule with PublishModule {
-  def publishVersion = "1.3-SNAPSHOT"
+  def publishVersion = "1.4-SNAPSHOT"
 
   def pomSettings = PomSettings(
     description = artifactName(),
@@ -76,7 +76,7 @@ object diagrammer extends Cross[DiagrammerModule](crossVersions: _*) {
 }
 
 // Provide a managed dependency on X if -DXVersion="" is supplied on the command line.
-val defaultVersions = Map("chisel3" -> "3.4-SNAPSHOT")
+val defaultVersions = Map("chisel3" -> "3.5-SNAPSHOT")
 
 def getVersion(dep: String, org: String = "edu.berkeley.cs") = {
   val version = sys.env.getOrElse(dep + "Version", defaultVersions(dep))