diff --git a/ctk.spec b/ctk.spec
index 3eca36b..814cc3f 100644
--- a/ctk.spec
+++ b/ctk.spec
@@ -5,7 +5,7 @@
 
 Name: ctk
 Version: 0.1
-Release: 0.15.20190721%{?dist}
+Release: 0.16.20190721%{?dist}
 Summary: The Commmon Toolkit for biomedical imaging
 
 License: ASL 2.0
@@ -169,6 +169,9 @@ popd
 %exclude %{_docdir}/%{name}/html/*.md5
 
 %changelog
+* Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.1-0.16.20190721
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.1-0.15.20190721
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild