diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index ace8eab5c..e0c1d97a1 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -10,7 +10,7 @@ object Dependencies {
   def nightlyVersion: Option[String] = sys.props.get("sbt.build.version")
 
   // sbt modules
-  private val ioVersion = nightlyVersion.getOrElse("1.3.0-M14")
+  private val ioVersion = nightlyVersion.getOrElse("1.3.0-M15")
   private val utilVersion = nightlyVersion.getOrElse("1.3.0-M8")
   private val lmVersion =
     sys.props.get("sbt.build.lm.version") match {