Erro ao executar apt-get install mitmf e apt-get update

ola, tive um pequeno contratempo quando fui tentar instalar o mitmf e não estou conseguindo resolver de jeito nenhum. Me ajudem aí, por favor.

root@kali:~# apt-get install mitmf
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  python-magic python-netfilterqueue python-nfqueue python-ua-parser python-user-agents
The following NEW packages will be installed:
  mitmf python-magic python-netfilterqueue python-nfqueue python-ua-parser python-user-agents
0 upgraded, 6 newly installed, 0 to remove and 0 not upgraded.
Need to get 254 kB/282 kB of archives.
After this operation, 1,326 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 http://http.kali.org/kali kali-rolling/main amd64 python-nfqueue amd64 0.6-1+b3                                                               
  404  Not Found
Err:2 http://http.kali.org/kali kali-rolling/main amd64 python-magic all 1:5.32-1
  404  Not Found
Err:3 http://http.kali.org/kali kali-rolling/main amd64 python-ua-parser all 0.3.6-0kali1
  404  Not Found
Err:4 http://http.kali.org/kali kali-rolling/main amd64 python-user-agents all 0.3.2-0kali1
  404  Not Found
Err:5 http://http.kali.org/kali kali-rolling/main amd64 mitmf all 0.9.8-0kali3
  404  Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/n/nfqueue-bindings/python-nfqueue_0.6-1+b3_amd64.deb  404  Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/f/file/python-magic_5.32-1_all.deb  404  Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/p/python-ua-parser/python-ua-parser_0.3.6-0kali1_all.deb  404  Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/p/python-user-agents/python-user-agents_0.3.2-0kali1_all.deb  404  Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/m/mitmf/mitmf_0.9.8-0kali3_all.deb  404  Not Found
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

root@kali:~# apt-get update
Get:1 http://kali.download/kali kali-rolling InRelease [30.5 kB]
Err:1 http://kali.download/kali kali-rolling InRelease
  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali.org>
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://kali.download/kali kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali.org>
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali.org>
W: Some index files failed to download. They have been ignored, or old ones used instead.