diff --git a/build.sbt b/build.sbt
new file mode 100644
index 00000000..2fbb499d
--- /dev/null
+++ b/build.sbt
@@ -0,0 +1,46 @@
+// See LICENSE.Berkeley for license details.
+
+import sbt.complete._
+import sbt.complete.DefaultParsers._
+import xerial.sbt.pack._
+import sys.process._
+
+enablePlugins(PackPlugin)
+
+lazy val commonSettings = Seq(
+  organization := "berkeley",
+  version      := "1.2",
+  scalaVersion := "2.11.12",
+  parallelExecution in Global := false,
+  traceLevel   := 15,
+  scalacOptions ++= Seq("-deprecation","-unchecked"),
+  libraryDependencies ++= Seq("org.scala-lang" % "scala-reflect" % scalaVersion.value),
+  addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full)
+)
+
+lazy val chisel = (project in file("chisel3")).settings(commonSettings)
+lazy val hardfloat  = project.dependsOn(chisel).settings(commonSettings)
+lazy val macros = (project in file("macros")).settings(commonSettings)
+lazy val rocketchip = (project in file("."))
+  .settings(commonSettings, chipSettings)
+  .dependsOn(chisel, hardfloat, macros)
+
+lazy val addons = settingKey[Seq[String]]("list of addons used for this build")
+lazy val make = inputKey[Unit]("trigger backend-specific makefile command")
+val setMake = NotSpace ~ ( Space ~> NotSpace )
+
+val chipSettings = Seq(
+  addons := {
+    val a = sys.env.getOrElse("ROCKETCHIP_ADDONS", "")
+    println(s"Using addons: $a")
+    a.split(" ")
+  },
+  unmanagedSourceDirectories in Compile ++= addons.value.map(baseDirectory.value / _ / "src/main/scala"),
+  mainClass in (Compile, run) := Some("rocketchip.Generator"),
+  make := {
+    val jobs = java.lang.Runtime.getRuntime.availableProcessors
+    val (makeDir, target) = setMake.parsed
+    (run in Compile).evaluated
+    s"make -C $makeDir  -j $jobs $target".!
+  }
+)
diff --git a/chisel3 b/chisel3
index 30e8eb55..9f504b99 160000
--- a/chisel3
+++ b/chisel3
@@ -1 +1 @@
-Subproject commit 30e8eb552a29b22bc23faa06f5661da6129188b2
+Subproject commit 9f504b9926d38d11fb8003c72360ff11d24b5ef6
diff --git a/emulator/Makefrag-verilator b/emulator/Makefrag-verilator
index 021e131c..a83426ba 100644
--- a/emulator/Makefrag-verilator
+++ b/emulator/Makefrag-verilator
@@ -10,7 +10,7 @@ verilog = \
 
 $(generated_dir)/%.fir $(generated_dir)/%.d: $(FIRRTL_JAR) $(chisel_srcs) $(bootrom_img)
 	mkdir -p $(dir $@)
-	cd $(base_dir) && $(SBT) "run-main $(PROJECT).Generator $(generated_dir) $(PROJECT) $(MODEL) $(CFG_PROJECT) $(CONFIG)"
+	cd $(base_dir) && $(SBT) "runMain $(PROJECT).Generator $(generated_dir) $(PROJECT) $(MODEL) $(CFG_PROJECT) $(CONFIG)"
 
 %.v %.conf: %.fir $(FIRRTL_JAR)
 	mkdir -p $(dir $@)
diff --git a/firrtl b/firrtl
index 40dda493..8ab501e7 160000
--- a/firrtl
+++ b/firrtl
@@ -1 +1 @@
-Subproject commit 40dda493a277f721306d428ee967dcb670813275
+Subproject commit 8ab501e7527139a4ee8d0b38f9b4384551387043
diff --git a/project/build.properties b/project/build.properties
index c091b86c..394cb75c 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.16
+sbt.version=1.0.4
diff --git a/project/build.scala b/project/build.scala
deleted file mode 100644
index 6d8d1e28..00000000
--- a/project/build.scala
+++ /dev/null
@@ -1,46 +0,0 @@
-// See LICENSE.Berkeley for license details.
-
-import sbt._
-import Keys._
-import complete._
-import complete.DefaultParsers._
-import xerial.sbt.Pack._
-
-object BuildSettings extends Build {
-
-  override lazy val settings = super.settings ++ Seq(
-    organization := "berkeley",
-    version      := "1.2",
-    scalaVersion := "2.11.11",
-    parallelExecution in Global := false,
-    traceLevel   := 15,
-    scalacOptions ++= Seq("-deprecation","-unchecked"),
-    libraryDependencies ++= Seq("org.scala-lang" % "scala-reflect" % scalaVersion.value),
-    addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full)
-  )
-
-  lazy val chisel = project in file("chisel3")
-  lazy val hardfloat  = project.dependsOn(chisel)
-  lazy val macros = project in file("macros")
-  lazy val rocketchip = (project in file(".")).settings(chipSettings).dependsOn(chisel, hardfloat, macros)
-
-  lazy val addons = settingKey[Seq[String]]("list of addons used for this build")
-  lazy val make = inputKey[Unit]("trigger backend-specific makefile command")
-  val setMake = NotSpace ~ ( Space ~> NotSpace )
-
-  val chipSettings = packAutoSettings ++ Seq(
-    addons := {
-      val a = sys.env.getOrElse("ROCKETCHIP_ADDONS", "")
-      println(s"Using addons: $a")
-      a.split(" ")
-    },
-    unmanagedSourceDirectories in Compile ++= addons.value.map(baseDirectory.value / _ / "src/main/scala"),
-    mainClass in (Compile, run) := Some("rocketchip.Generator"),
-    make := {
-      val jobs = java.lang.Runtime.getRuntime.availableProcessors
-      val (makeDir, target) = setMake.parsed
-      (run in Compile).evaluated
-      s"make -C $makeDir  -j $jobs $target" !
-    }
-  )
-}
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 715be580..ed9ac0ee 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,11 +2,11 @@ resolvers += "jgit-repo" at "http://download.eclipse.org/jgit/maven"
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.6.2")
 
-addSbtPlugin("com.typesafe.sbt" % "sbt-site" % "1.3.0")
+addSbtPlugin("com.typesafe.sbt" % "sbt-site" % "1.3.1")
 
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.7.0")
 
-addSbtPlugin("org.xerial.sbt" % "sbt-pack" % "0.8.0")
+addSbtPlugin("org.xerial.sbt" % "sbt-pack" % "0.9.3")
 
 addSbtPlugin("com.eed3si9n" % "sbt-unidoc" % "0.4.1")
 
diff --git a/vsim/Makefrag-verilog b/vsim/Makefrag-verilog
index d0571eeb..7514be2e 100644
--- a/vsim/Makefrag-verilog
+++ b/vsim/Makefrag-verilog
@@ -10,7 +10,7 @@ verilog = $(generated_dir)/$(long_name).v
 
 $(generated_dir)/%.fir $(generated_dir)/%.d: $(FIRRTL_JAR) $(chisel_srcs) $(bootrom_img)
 	mkdir -p $(dir $@)
-	cd $(base_dir) && $(SBT) "run-main $(PROJECT).Generator $(generated_dir) $(PROJECT) $(MODEL) $(CFG_PROJECT) $(CONFIG)"
+	cd $(base_dir) && $(SBT) "runMain $(PROJECT).Generator $(generated_dir) $(PROJECT) $(MODEL) $(CFG_PROJECT) $(CONFIG)"
 
 $(generated_dir)/%.v $(generated_dir)/%.conf: $(generated_dir)/%.fir $(FIRRTL_JAR)
 	mkdir -p $(dir $@)