diff --git a/build.sbt b/build.sbt
index 8b03d446b..520c01b7e 100644
--- a/build.sbt
+++ b/build.sbt
@@ -44,7 +44,7 @@ ThisBuild / version := {
   nightlyVersion match {
     case Some(v) => v
     case _ =>
-      if ((ThisBuild / isSnapshot).value) "1.7.0-SNAPSHOT"
+      if ((ThisBuild / isSnapshot).value) "1.9.0-SNAPSHOT"
       else old
   }
 }
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 4cdf7576f..3ecc88889 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -13,8 +13,8 @@ object Dependencies {
   val allScalaVersions = Seq(defaultScalaVersion, scala210, scala211, scala213)
   val scala212_213 = Seq(defaultScalaVersion, scala213)
 
-  private val ioVersion = nightlyVersion.getOrElse("1.8.1")
-  private val utilVersion = nightlyVersion.getOrElse("1.9.0-RC2-2")
+  private val ioVersion = nightlyVersion.getOrElse("1.9.0-RC3")
+  private val utilVersion = nightlyVersion.getOrElse("1.9.0-RC3")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion