diff --git a/hdf.spec b/hdf.spec
index b7d0bf7..e358ffd 100644
--- a/hdf.spec
+++ b/hdf.spec
@@ -4,7 +4,7 @@
 
 Name: hdf
 Version: 4.2.15
-Release: 5%{?dist}
+Release: 6%{?dist}
 Summary: A general purpose library and file format for storing scientific data
 License: BSD
 URL: https://portal.hdfgroup.org/
@@ -261,6 +261,9 @@ make -j1 -C build-static check
 
 
 %changelog
+* Thu Jul 22 2021 Fedora Release Engineering <releng@fedoraproject.org> - 4.2.15-6
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
+
 * Sun May 30 2021 Orion Poplawski <orion@nwra.com> - 4.2.15-5
 - Handle junit versions better