diff --git a/icestorm.spec b/icestorm.spec
index d68db81..1590854 100644
--- a/icestorm.spec
+++ b/icestorm.spec
@@ -6,7 +6,7 @@
 
 Name:           icestorm
 Version:        0
-Release:        0.3.20170914git%{shortcommit0}%{?dist}
+Release:        0.4.20170914git%{shortcommit0}%{?dist}
 Summary:        Lattice iCE40 FPGA bitstream creation/analysis/programming tools
 License:        ISC
 URL:            http://www.clifford.at/%{name}/
@@ -53,6 +53,9 @@ mv %{buildroot}%{_bindir}/iceboxdb.py %{buildroot}%{_datarootdir}/%{name}
 %{_datarootdir}/%{name}
 
 %changelog
+* Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0-0.4.20170914git5c4d4db
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
+
 * Thu Sep 14 2017 Eric Smith <brouhaha@fedoraproject.org> 0-0.3.20170914git5c4d4db
 - Updated per review comments.
 - Updated to latest upstream.