diff --git a/felix-osgi-core.spec b/felix-osgi-core.spec
index 83122d1..bbe44e7 100644
--- a/felix-osgi-core.spec
+++ b/felix-osgi-core.spec
@@ -2,7 +2,7 @@
 
 Name:           felix-osgi-core
 Version:        1.4.0
-Release:        20%{?dist}
+Release:        21%{?dist}
 Summary:        Felix OSGi R4 Core Bundle
 License:        ASL 2.0
 URL:            http://felix.apache.org/site/apache-felix-osgi-core.html
@@ -43,6 +43,9 @@ export LC_ALL=en_US.UTF-8
 %license LICENSE NOTICE
 
 %changelog
+* Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.0-21
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
+
 * Thu Jun 16 2016 Mikolaj Izdebski <mizdebsk@redhat.com> - 1.4.0-20
 - Regenerate build-requires
 - Update to current packaging guidelines