diff --git a/eigen3.spec b/eigen3.spec
index 8154f3e..ca87c48 100644
--- a/eigen3.spec
+++ b/eigen3.spec
@@ -24,7 +24,7 @@
 
 Name:           eigen3
 Version:        3.3.9
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        A lightweight C++ template library for vector and matrix math
 
 License:        MPLv2.0 and LGPLv2+ and BSD
@@ -124,6 +124,9 @@ rm -f %{_vpath_builddir}/doc/html/unsupported/installdox
 
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.3.9-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Jan 19 2021 Jan Grulich <jgrulich@redhat.com> - 3.3.9-3
 - Drop qt dependency on RHEL 8 and higher