diff --git a/tasty/src/dotty/tools/tasty/TastyFormat.scala b/tasty/src/dotty/tools/tasty/TastyFormat.scala
index ce3e1a852c74..58a9bb67b379 100644
--- a/tasty/src/dotty/tools/tasty/TastyFormat.scala
+++ b/tasty/src/dotty/tools/tasty/TastyFormat.scala
@@ -318,7 +318,9 @@ object TastyFormat {
    *  compatibility, but remains backwards compatible, with all
    *  preceeding `MinorVersion`.
    */
-  final val MinorVersion: Int = 4
+  // Since 3.3.1, this version in one larger than the Scala minor version
+  // see https://github.com/lampepfl/dotty/pull/19321#issuecomment-1893343986
+  final val MinorVersion: Int = 5
 
   /** Natural Number. The `ExperimentalVersion` allows for
    *  experimentation with changes to TASTy without committing