diff --git a/mono-core.spec b/mono-core.spec
index 8904eab62a..0143b79b84 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -28,7 +28,7 @@
 
 Name:           mono-core
 %define __majorver 4.5.0
-%define __minorver 262
+%define __minorver 421
 Version:	%{__majorver}.%{__minorver}
 Release:	0.nightly.1
 Summary:        Cross-platform, Open Source, .NET development framework