Sign the dist as the last step before creating the archive. Take care not to modify/regenerate dist meta files or the manifest.

Error: Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer. gpg: Signature made Tue 16 Sep 2014 08:37:32 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Tue Sep 16 08:37:35 2014 +++ @@ -1,6 +1,8 @@ SHA1 7b288a35560308a2a0bfa838e711c02e047ef2c4 Changes -SHA1 0f083a3b5222e999d1b9fecc960bb669ceef3733 MANIFEST +SHA1 d2a83bd11f9bcd0f9ac52d4b8be95f1f63e4bdd6 MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 dcd3fb953b3641eab07a7176acd96daffaa1e97795785bb5bfe33d30ece5ee92 META.json +SHA256 c8a86a4deea135c68e2cc99d190c6fdee2e581576980ad87fb5054faa1a6cf5f META.yml SHA1 43026a1a07558edf9563a0077bca9b272c7e4ff2 Makefile.PL SHA1 bf48fc656c067fb63aaae13f1f1aa6cb3ce37083 README SHA1 1e031e3912127d688be2ecba2faa20ce3e4e85f3 lib/LWP/UserAgent/Anonymous.pm ==> MISMATCHED content between SIGNATURE and distribution files! <==

If you are using Build.PL define the {requires}{perl} = VERSION field. If you are using MakeMaker (Makefile.PL) you should upgrade ExtUtils::MakeMaker to 6.48 and use MIN_PERL_VERSION parameter. Perl::MinimumVersion can help you determine which version of Perl your module needs.

Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build or Dist::Zilla::Plugin::MetaProvides do this automatically for you.

This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.