The deb.torproject.org archive key is expired. pub 2048R/886DDD89 2009-09-04 [expires: 2020-08-29] Key fingerprint = A3C4 F0F9 79CA A22C DBA8 F512 EE8C BC9E 886D DD89 uid deb.torproject.org archive signing key sub 2048R/219EC810 2009-09-04 [expires: 2018-08-30] Old ticket with the same issue: https://trac.torproject.org/projects/tor/ticket/12994 **Trac**: **Username**: again