Z:gnu-www-ja-gpl-faq--aedd64-7: LGPLv2.1 gives you permissi/en

7: LGPLv2.1 gives you permission to relicense the code under any version of the GPL since GPLv2. If you can switch the LGPLed code in this case to using an appropriate version of the GPL instead (as noted in the table), you can make this combination.