diff --git a/mono-core.spec b/mono-core.spec
index 63f1aa4438..a0616e09bd 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -28,9 +28,9 @@
 
 Name:           mono-core
 %define __majorver 4.9.0
-%define __minorver 1735
+%define __minorver 1766
 Version:	%{__majorver}.%{__minorver}
-Release:	0.nightly.3
+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