diff --git a/mono-core.spec b/mono-core.spec
index 4de1a467df..d6c143248c 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -27,8 +27,8 @@
 %define sgen yes
 
 Name:           mono-core
-%define __majorver 4.9.0
-%define __minorver 1804
+%define __majorver 4.9.1
+%define __minorver 99
 Version:	%{__majorver}.%{__minorver}
 Release:	0.nightly.1
 Summary:        Cross-platform, Open Source, .NET development framework