diff --git a/packmol.spec b/packmol.spec
index f13f944..a176fac 100644
--- a/packmol.spec
+++ b/packmol.spec
@@ -1,6 +1,6 @@
 Name:		packmol
 Version:	1.1.2.023
-Release:	3%{?dist}
+Release:	4%{?dist}
 Summary:	Packing optimization for molecular dynamics simulations
 Group:		Applications/Engineering
 License:	GPLv2+
@@ -69,6 +69,9 @@ rm -rf %{buildroot}
 %{_bindir}/packmol_solvate
 
 %changelog
+* Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.1.2.023-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
+
 * Thu Feb 14 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.1.2.023-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild