diff --git a/build.sbt b/build.sbt
index bdea1d1..94ff431 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,9 +2,9 @@ organization := "eu.teamon"
 
 name := "play-navigator"
 
-version := "0.5.0"
+version := "0.5.1"
 
-scalaVersion := "2.10.2"
+scalaVersion := "2.10.4"
 
 scalaBinaryVersion := "2.10"
 
@@ -19,7 +19,7 @@ resolvers ++= Seq(
   Resolver.typesafeRepo("snapshots")
 )
 
-val play_version = Option(System.getenv("PLAY_VERSION")).getOrElse("2.2.0")
+val play_version = Option(System.getenv("PLAY_VERSION")).getOrElse("2.3.3")
 
 libraryDependencies ++= (
   Seq(
diff --git a/src/main/scala/play/navigator/PlayNavigator.scala b/src/main/scala/play/navigator/PlayNavigator.scala
index d7fba2b..1c73bae 100644
--- a/src/main/scala/play/navigator/PlayNavigator.scala
+++ b/src/main/scala/play/navigator/PlayNavigator.scala
@@ -1,10 +1,8 @@
 package play
 
 import scala.language.implicitConversions
-import play.api.Mode
 import play.api.mvc._
 import play.api.mvc.Results.NotFound
-import play.core.Router
 
 
 object navigator {
@@ -58,7 +56,7 @@ object navigator {
 
     def onHandlerNotFound(request: RequestHeader) = {
       NotFound(play.api.Play.maybeApplication.map {
-        case app if app.mode == Mode.Dev => views.html.defaultpages.devNotFound.f
+        case app if app.mode == Mode.DEV => views.html.defaultpages.devNotFound.f
         case app => views.html.defaultpages.notFound.f
       }.getOrElse(views.html.defaultpages.devNotFound.f)(request, Some(router)))
     }