diff --git a/libtommath.spec b/libtommath.spec
index 31799e0..191b569 100644
--- a/libtommath.spec
+++ b/libtommath.spec
@@ -1,6 +1,6 @@
 Name:           libtommath
 Version:        0.42.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        A portable number theoretic multiple-precision integer library
 License:        Public Domain
 URL:            http://www.libtom.org/?page=features&newsitems=5&whatfile=ltm
@@ -88,6 +88,9 @@ find %{buildroot} -name '*.a' -delete
 %doc bn.pdf poster.pdf tommath.pdf
 
 %changelog
+* Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.42.0-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
+
 * Sun Sep 29 2013 Simone Caronni <negativo17@gmail.com> - 0.42.0-3
 - Move headers to default location.