diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index f27154224..8d4403a72 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -12,7 +12,7 @@ object Dependencies {
     sys.env.get("BUILD_VERSION") orElse sys.props.get("sbt.build.version")
 
   // sbt modules
-  private val ioVersion = nightlyVersion.getOrElse("1.9.0")
+  private val ioVersion = nightlyVersion.getOrElse("1.9.1")
   private val lmVersion =
     sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.9.0")
   val zincVersion = nightlyVersion.getOrElse("1.9.1")