diff --git a/grace.spec b/grace.spec
index 808204c..aa33055 100644
--- a/grace.spec
+++ b/grace.spec
@@ -3,7 +3,7 @@
 
 Name:           grace
 Version:        5.1.23
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Numerical Data Processing and Visualization Tool
 
 License:        GPLv2+
@@ -224,6 +224,9 @@ fi
 
 
 %changelog
+* Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 5.1.23-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
+
 * Fri Apr 12 2013 Jon Ciesla <limburgher@gmail.com> - 5.1.23-4
 - Drop desktop vendor tag.