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 Fri 15 Aug 2014 08:05:53 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Fri Aug 15 08:05:55 2014 +++ @@ -1,6 +1,8 @@ SHA1 1ce6f76128a00f7cd082ae38fae2177722ad1064 Changes -SHA1 fcec66f57154b1d1bc9f44638ec1315b32bdca29 MANIFEST +SHA1 f8a2e5a4ef9e4dabe1582b88906b510e1b1661d1 MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 367b0194471d859eb657f05a376d9577ba7dd064bec4b7f1592a2fb7a0ef6f6b META.json +SHA256 24c843ee0de286a0359c9c28a56721972e4696e5277501f65cae2f3d09ea58f2 META.yml SHA1 b93def40ec2697f6212e0bbff06940d5de73c83b Makefile.PL SHA1 7ed8fb9b631f28bff912b21ed9424d0de19543bf README SHA1 1b9ddf21d89f2122f7bacc4c1bacd18fdafc570d lib/WWW/Google/UserAgent.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.