diff --git a/build.sbt b/build.sbt
index d5f8ac88f..774a4d591 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ import scala.util.Try
 // ThisBuild settings take lower precedence,
 // but can be shared across the multi projects.
 ThisBuild / version := {
-  val v = "1.5.5-SNAPSHOT"
+  val v = "1.6.0-SNAPSHOT"
   nightlyVersion.getOrElse(v)
 }
 ThisBuild / version2_13 := "2.0.0-SNAPSHOT"
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index d5035cf74..974fa291b 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -12,10 +12,10 @@ object Dependencies {
     sys.env.get("BUILD_VERSION") orElse sys.props.get("sbt.build.version")
 
   // sbt modules
-  private val ioVersion = nightlyVersion.getOrElse("1.5.1")
+  private val ioVersion = nightlyVersion.getOrElse("1.6.0-M1")
   private val lmVersion =
-    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.5.2")
-  val zincVersion = nightlyVersion.getOrElse("1.5.5")
+    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.6.0-M1")
+  val zincVersion = nightlyVersion.getOrElse("1.6.0-M1")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion