The FSF gives people permission to modify the GPL as MongoDB did https://www.gnu.org/licenses/gpl-faq.html#ModifyGPL https://www.gnu.org/licenses/gpl-faq.html#M

The FSF gives people permission to modify the GPL as MongoDB did https://www.gnu.org/licenses/gpl-faq.html#ModifyGPL https://www.gnu.org/licenses/gpl-faq.html#ModifyGPL They do not require in that license to modify the GPL license that you keep the original copyright attribution around. (IANAL - not legal advice, etc etc)