Issues using apt-get for Debian

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1

So I got a Beagle Bone Black from the maker kit(Rev C). I'm having a issue when using apt-get about old/expired signatures when I'm trying to update. Is there a work around for this?

2

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#W:_GPG_error:_http:.2F.2Fdebian.beagleboard.org_wheezy-bbb

Regards,