$ sudo apt-get upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  sudo
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 342 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] 
Err http://ubuntu.excellmedia.net/archive/ trusty-updates/main sudo amd64 1.8.9p5-1ubuntu1.3
  403  Forbidden
E: Failed to fetch http://ubuntu.excellmedia.net/archive/pool/main/s/sudo/sudo_1.8.9p5-1ubuntu1.3_amd64.deb  403  Forbidden

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?