diff --git a/project/Build.scala b/project/Build.scala
index b275014efa20..d4e1149767b4 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -81,7 +81,7 @@ 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"