diff --git a/mono-core.spec b/mono-core.spec
index cf86a6e9b5..bc0ebae693 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -27,7 +27,7 @@
 
 Name:           mono-core
 %define __majorver 6.4.0
-%define __minorver 154
+%define __minorver 159
 Version:	%{__majorver}.%{__minorver}
 Release:	0.xamarin.1
 Summary:        Cross-platform, Open Source, .NET development framework