diff --git a/mono-core.spec b/mono-core.spec
index 05ec4bd2e9..8facd50c5b 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -27,8 +27,8 @@
 %define sgen yes
 
 Name:           mono-core
-%define __majorver 4.0.5
-%define __minorver 1
+%define __majorver 4.2.0
+%define __minorver 179
 Version:	%{__majorver}.%{__minorver}
 Release:	0.xamarin.1
 Summary:        Cross-platform, Open Source, .NET development framework