diff --git a/microcode_ctl.spec b/microcode_ctl.spec
index e76e48c..cd7d4cc 100644
--- a/microcode_ctl.spec
+++ b/microcode_ctl.spec
@@ -4,7 +4,7 @@
 Summary:        Tool to transform and deploy CPU microcode update for x86
 Name:           microcode_ctl
 Version:        2.1
-Release:        20%{?dist}
+Release:        21%{?dist}
 Epoch:          2
 License:        GPLv2+ and Redistributable, no modification permitted
 URL:            https://pagure.io/microcode_ctl
@@ -34,6 +34,9 @@ make DESTDIR=%{buildroot} PREFIX=%{_prefix} INSDIR=/usr/sbin install clean
 
 
 %changelog
+* Thu Feb 08 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2:2.1-21
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
+
 * Tue Jan 09 2018 Anton Arapov <aarapov@redhat.com> 2:2.1-20
 - Update to upstream 2.1-15. 20180108