diff --git a/vtk.spec b/vtk.spec
index cb39d6e..5061f4b 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -9,7 +9,7 @@
 Summary: The Visualization Toolkit - A high level 3D visualization library
 Name: vtk
 Version: 6.1.0
-Release: 11%{?dist}
+Release: 12%{?dist}
 # This is a variant BSD license, a cross between BSD and ZLIB.
 # For all intents, it has the same rights and restrictions as BSD.
 # http://fedoraproject.org/wiki/Licensing/BSD#VTKBSDVariant
@@ -448,6 +448,9 @@ cp -pr --parents Wrapping/*/README* _docs/
 %doc vtk-examples/Examples
 
 %changelog
+* Sun Jun 08 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 6.1.0-12
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
+
 * Thu Jun 5 2014 Orion Poplawski <orion@cora.nwra.com> - 6.1.0-11
 - Add requires on blas-devel and lapack-devel to vtk-devel (bug #1105004)