diff --git a/SourceGen/App.xaml.cs b/SourceGen/App.xaml.cs
index 99682df..20dc21e 100644
--- a/SourceGen/App.xaml.cs
+++ b/SourceGen/App.xaml.cs
@@ -25,6 +25,6 @@ namespace SourceGen {
         /// SourceGen version number.
         /// </summary>
         public static readonly CommonUtil.Version ProgramVersion =
-            new CommonUtil.Version(1, 9, 0, CommonUtil.Version.PreRelType.Final, 0);
+            new CommonUtil.Version(1, 9, 1, CommonUtil.Version.PreRelType.Dev, 1);
     }
 }