diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 02f6e4366..196c45c85 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -11,10 +11,10 @@ object Dependencies {
   def nightlyVersion = sys.props.get("sbt.build.version")
 
   // sbt modules
-  private val ioVersion = nightlyVersion.getOrElse("1.4.0-M2")
+  private val ioVersion = nightlyVersion.getOrElse("1.4.0-M3")
   private val lmVersion =
     sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.3.0")
-  val zincVersion = nightlyVersion.getOrElse("1.4.0-M3")
+  val zincVersion = nightlyVersion.getOrElse("1.4.0-M5")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion