Yep, you can remove the Version line by adding no-emit-version to your gpg.conf. For the sake of everyone's sanity, use a PGP program that is based on a recent port of GnuPG. Windows: GPG4USB, GPG4Win OS X: GPGTools Linux: GPG itself (the original) Then find where your gpg.conf (configuration file) is, and replace everything in it with this: