diff --git a/thunderbird.spec b/thunderbird.spec
index 37dc02f..0b5c2ea 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -92,7 +92,7 @@
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
 Version:        52.2.1
-Release:        1%{?dist}
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -725,6 +725,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 52.2.1-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Thu Jun 29 2017 Jan Horak <jhorak@redhat.com> - 52.2.1-1
 - Update to 52.2.1