diff --git a/advancecomp.spec b/advancecomp.spec
index 3fc0cf5..20b6f14 100644
--- a/advancecomp.spec
+++ b/advancecomp.spec
@@ -1,6 +1,6 @@
 Name:           advancecomp
 Version:        1.23
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Recompression utilities for .PNG, .MNG and .ZIP files
 License:        GPLv3
 URL:            http://www.advancemame.it/
@@ -39,6 +39,9 @@ make install DESTDIR=%{buildroot}
 %{_mandir}/man1/*
 
 %changelog
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.23-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Tue Feb 28 2017 Christian Dersch <lupinix@mailbox.org> - 1.23-1
 - new version