diff --git a/project/Build.scala b/project/Build.scala
index 677532fd7cef..4680474d4411 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -83,7 +83,7 @@ object DottyJSPlugin extends AutoPlugin {
 object Build {
   import ScaladocConfigs._
 
-  val referenceVersion = "3.3.1-RC3"
+  val referenceVersion = "3.3.1-RC4"
 
   val baseVersion = "3.3.2-RC1" // temporarily, before branching out `3.4.0-RC1`