diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index d9d33b2f3..373de2b17 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -11,7 +11,7 @@ object Dependencies:
 
   // sbt modules
   val ioVersion = nightlyVersion.getOrElse("1.13.3")
-  val zincVersion = nightlyVersion.getOrElse("2.1.0-M2")
+  val zincVersion = nightlyVersion.getOrElse("2.1.0-M4")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion