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 Sun 21 Sep 2014 06:17:32 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Sun Sep 21 06:17:35 2014 +++ @@ -1,6 +1,8 @@ SHA1 c6a254d3d5f4d398f05465d956a67041c58953b4 Changes -SHA1 3ab88d5b885334061053d71ba50bc59f9fe0e769 MANIFEST +SHA1 782dc199d07a540726c44804f5b9f3fe7df153ce MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 ed9b48b00b63160b8af48dd81036f615c2b783bcdf0496cd97c8ab0dd13eabcd META.json +SHA256 f451c4d862782f9284f75771cc35cfd6b2910f09db3c8a80d8afa8cc4280b1a0 META.yml SHA1 7047c66c69d870c3639073d3869512ce29d0c5d5 Makefile.PL SHA1 a182f7c2100ce36281693411e3d5ce65a253c14d README SHA1 d882e99100c3b12cd8d8ce3d263431a5a9d15490 lib/Map/Tube/London.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.