Changelog for boost169-regex-1.69.0-2.el7.x86_64.rpm :

* Tue Apr 23 2019 Denis Arnaud - 1.69.0-2- Rebuild for Python 3.6 (upgraded from Python 3.4 by default)
* Wed Jan 23 2019 Denis Arnaud - 1.69.0-1- Transformed boost-1.69.0-1 into boost169-1.69.0-1 (BZ#1667725)