diff --git a/mono-core.spec b/mono-core.spec
index 7e73f240cd..4df75a7df4 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -27,9 +27,9 @@
 
 Name:           mono-core
 %define __majorver 5.21.0
-%define __minorver 428
+%define __minorver 439
 Version:	%{__majorver}.%{__minorver}
-Release:	0.nightly.2
+Release:	0.nightly.1
 Summary:        Cross-platform, Open Source, .NET development framework
 License:        LGPL-2.1 and MIT and MS-PL
 Group:          Development/Languages/Mono