diff --git a/PyYAML.spec b/PyYAML.spec
index edc53d2..7660d80 100644
--- a/PyYAML.spec
+++ b/PyYAML.spec
@@ -6,7 +6,7 @@
 
 Name:           PyYAML
 Version:        3.12
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        YAML parser and emitter for Python
 
 Group:          Development/Libraries
@@ -121,6 +121,9 @@ popd
 
 
 %changelog
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 3.12-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 3.12-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild