diff --git a/libchewing.spec b/libchewing.spec
index be3f22f..689d5a2 100644
--- a/libchewing.spec
+++ b/libchewing.spec
@@ -6,7 +6,7 @@
 
 Name:           libchewing
 Version:        0.5.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Intelligent phonetic input method library for Traditional Chinese
 Summary(zh_TW): %{name_zh_TW}
 
@@ -116,6 +116,9 @@ fi
 %{libchewing_python_dir}
 
 %changelog
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild