Changelog for erlang-hex_core-0.4.0-2.fc31.noarch.rpm :

* Wed Jul 24 2019 Fedora Release Engineering - 0.4.0-2- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
* Tue Feb 05 2019 Timothée Floure - 0.4.0-1- Let there be package