diff --git a/build.sbt b/build.sbt
index fb24dfe..639580d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,33 +1,7 @@
-sbtPlugin := true
-
 organization := "com.typesafe.sbt"
-
 name := "sbt-coffeescript"
-
-version := "1.0.1-SNAPSHOT"
-
-scalaVersion := "2.10.4"
-
-scalacOptions += "-feature"
-
 libraryDependencies ++= Seq(
-  "org.webjars" % "coffee-script-node" % "1.7.1",
-  "org.webjars" % "mkdirp" % "0.3.5"
+  "org.webjars" % "coffee-script-node" % "1.11.0",
+  "org.webjars" % "mkdirp" % "0.5.0"
 )
-
-resolvers ++= Seq(
-  "Typesafe Releases Repository" at "http://repo.typesafe.com/typesafe/releases/"
-)
-
-addSbtPlugin("com.typesafe.sbt" % "sbt-js-engine" % "1.2.0")
-
-publishMavenStyle := false
-
-publishTo := {
-  if (isSnapshot.value) Some(Classpaths.sbtPluginSnapshots)
-  else Some(Classpaths.sbtPluginReleases)
-}
-
-scriptedSettings
-
-scriptedLaunchOpts <+= version apply { v => s"-Dproject.version=$v" }
+addSbtJsEngine("1.2.1")
diff --git a/project/build.properties b/project/build.properties
index 27e88aa..64317fd 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
diff --git a/project/plugins.sbt b/project/plugins.sbt
index c3b4f97..662cca1 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,3 +1 @@
-libraryDependencies <+= (sbtVersion) { sv =>
-  "org.scala-sbt" % "scripted-plugin" % sv
-}
\ No newline at end of file
+addSbtPlugin("com.typesafe.sbt" % "sbt-web-build-base" % "1.0.0")
diff --git a/sbt-coffeescript-plugin-tester/project/build.properties b/sbt-coffeescript-plugin-tester/project/build.properties
index 27e88aa..64317fd 100755
--- a/sbt-coffeescript-plugin-tester/project/build.properties
+++ b/sbt-coffeescript-plugin-tester/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
diff --git a/src/main/scala/com/typesafe/sbt/coffeescript/SbtCoffeeScript.scala b/src/main/scala/com/typesafe/sbt/coffeescript/SbtCoffeeScript.scala
index 8cb7014..7287d99 100644
--- a/src/main/scala/com/typesafe/sbt/coffeescript/SbtCoffeeScript.scala
+++ b/src/main/scala/com/typesafe/sbt/coffeescript/SbtCoffeeScript.scala
@@ -40,18 +40,23 @@ object SbtCoffeeScript extends AutoPlugin {
     ).toString()
   )
 
+  override def buildSettings = inTask(coffeescript)(
+    SbtJsTask.jsTaskSpecificUnscopedBuildSettings ++ Seq(
+      moduleName := "coffeescript",
+      shellFile := getClass.getClassLoader.getResource("coffee.js")
+
+    )
+  )
+
   override def projectSettings = Seq(
     bare := false,
     sourceMap := true
 
   ) ++ inTask(coffeescript)(
-    SbtJsTask.jsTaskSpecificUnscopedSettings ++
+    SbtJsTask.jsTaskSpecificUnscopedProjectSettings ++
       inConfig(Assets)(coffeeScriptUnscopedSettings) ++
       inConfig(TestAssets)(coffeeScriptUnscopedSettings) ++
       Seq(
-        moduleName := "coffeescript",
-        shellFile := getClass.getClassLoader.getResource("coffee.js"),
-
         taskMessage in Assets := "CoffeeScript compiling",
         taskMessage in TestAssets := "CoffeeScript test compiling"
       )
diff --git a/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt b/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
index 938e181..510fc92 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
@@ -12,7 +12,7 @@ checkMapFileContents := {
                     |    "a.coffee"
                     |  ],
                     |  "names": [],
-                    |  "mappings": "AAAA;AAAA,MAAA,gBAAA;;AAAA,EAAA,MAAA,GAAW,EAAX,CAAA;;AAAA,EACA,QAAA,GAAW,IADX,CAAA;AAAA"
+                    |  "mappings": "AAAA;AAAA,MAAA;;EAAA,MAAA,GAAW;;EACX,QAAA,GAAW;AADX"
                     |}""".stripMargin) {
     sys.error(s"Unexpected contents: $contents")
   }
diff --git a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/build.properties b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/build.properties
index 27e88aa..64317fd 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/build.properties
+++ b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
diff --git a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
index 5407e68..f2520da 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
@@ -1,8 +1 @@
-addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % sys.props("project.version"))
-
-resolvers ++= Seq(
-  Resolver.mavenLocal,
-  Resolver.url("sbt snapshot plugins", url("http://repo.scala-sbt.org/scalasbt/sbt-plugin-snapshots"))(Resolver.ivyStylePatterns),
-  Resolver.sonatypeRepo("snapshots"),
-  "Typesafe Snapshots Repository" at "http://repo.typesafe.com/typesafe/snapshots/"
-)
+addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % sys.props("project.version"))
\ No newline at end of file
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/build.sbt b/src/sbt-test/sbt-coffeescript-plugin/error-output/build.sbt
new file mode 100644
index 0000000..5f230a1
--- /dev/null
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/build.sbt
@@ -0,0 +1,29 @@
+lazy val root = (project in file(".")).enablePlugins(SbtWeb)
+
+WebKeys.reporter := {
+  val logFile = target.value / "test-errors.log"
+  new LoggerReporter(-1, new Logger {
+
+    def trace(t: => Throwable): Unit = {}
+
+    def success(message: => String): Unit = {}
+
+    def log(level: Level.Value, message: => String): Unit = {
+      if (level == Level.Error) {
+        IO.append(logFile, message + "\n")
+      }
+    }
+  })
+}
+
+val checkTestErrorLogContents = taskKey[Unit]("check that test log contents are correct")
+checkTestErrorLogContents := {
+  val contents = IO.read(target.value / "test-errors.log")
+  if (!contents.endsWith("""/src/main/assets/a.coffee:0: unexpected %
+                            |%
+                            |^
+                            |one error found
+                            |""".stripMargin)) {
+    sys.error(s"Unexpected contents: $contents")
+  }
+}
\ No newline at end of file
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/TestBuild.scala b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/TestBuild.scala
deleted file mode 100644
index 39652c6..0000000
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/TestBuild.scala
+++ /dev/null
@@ -1,36 +0,0 @@
-import java.util.concurrent.atomic.AtomicInteger
-import sbt._
-import sbt.Keys._
-
-import com.typesafe.sbt.web.SbtWeb
-import com.typesafe.sbt.web.SbtWeb.autoImport._
-
-object TestBuild extends Build {
-
-  class TestLogger(target: File) extends Logger {
-    val unrecognisedInputCount = new AtomicInteger(0)
-
-    def trace(t: => Throwable): Unit = {}
-
-    def success(message: => String): Unit = {}
-
-    def log(level: Level.Value, message: => String): Unit = {
-      if (level == Level.Error) {
-        if (message.contains("missing )")) {
-          if (unrecognisedInputCount.addAndGet(1) == 1) {
-            IO.touch(target / "unrecognised-input-error")
-          }
-        }
-      }
-    }
-  }
-
-  class TestReporter(target: File) extends LoggerReporter(-1, new TestLogger(target))
-
-  lazy val root = Project(
-    id = "test-build",
-    base = file("."),
-    settings = Seq(WebKeys.reporter := new TestReporter(target.value))
-  ).enablePlugins(SbtWeb)
-
-}
\ No newline at end of file
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/build.properties b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/build.properties
index 27e88aa..64317fd 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/build.properties
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
index 5407e68..f2520da 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
@@ -1,8 +1 @@
-addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % sys.props("project.version"))
-
-resolvers ++= Seq(
-  Resolver.mavenLocal,
-  Resolver.url("sbt snapshot plugins", url("http://repo.scala-sbt.org/scalasbt/sbt-plugin-snapshots"))(Resolver.ivyStylePatterns),
-  Resolver.sonatypeRepo("snapshots"),
-  "Typesafe Snapshots Repository" at "http://repo.typesafe.com/typesafe/snapshots/"
-)
+addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % sys.props("project.version"))
\ No newline at end of file
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/src/main/assets/a.coffee b/src/sbt-test/sbt-coffeescript-plugin/error-output/src/main/assets/a.coffee
index f73cddb..02691e3 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/src/main/assets/a.coffee
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/src/main/assets/a.coffee
@@ -1 +1 @@
-*(U$@QNJH#R)
\ No newline at end of file
+%
\ No newline at end of file
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/test b/src/sbt-test/sbt-coffeescript-plugin/error-output/test
index b856061..0aeabd7 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/test
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/test
@@ -1,3 +1,3 @@
 # Compile an less file and see that errors are reported.
 -> assets
-$ exists target/unrecognised-input-error
+> checkTestErrorLogContents
\ No newline at end of file
diff --git a/version.sbt b/version.sbt
new file mode 100644
index 0000000..dc11afe
--- /dev/null
+++ b/version.sbt
@@ -0,0 +1 @@
+version in ThisBuild := "1.0.1-SNAPSHOT"