diff --git a/arbor.spec b/arbor.spec
index 2acfa6e..a4d376a 100644
--- a/arbor.spec
+++ b/arbor.spec
@@ -25,7 +25,7 @@ Documentation is available at https://arbor.readthedocs.io/en/latest/
 
 Name:           arbor
 Version:        0.3
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Multi-compartment neural network simulation library
 
 License:        BSD
@@ -381,6 +381,9 @@ popd
 %endif
 
 %changelog
+* Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.3-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Sun Jun 28 2020 Ankur Sinha <ankursinha AT fedoraproject DOT org> - 0.3-2
 - Update build flags to ensure CC and CXX are set correctly
 - https://lists.fedoraproject.org/archives/list/scitech@lists.fedoraproject.org/thread/BNKLXKY4O7BOTZ7LH7XDUTQO6FG2UWUT/#BNKLXKY4O7BOTZ7LH7XDUTQO6FG2UWUT