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 Sat 30 Aug 2014 10:03:28 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Sat Aug 30 10:03:28 2014 +++ @@ -1,6 +1,8 @@ SHA1 ac7349d13d02fb9da5dcf7cafc982a4e130f74b6 Changes -SHA1 40ed376da8ce82c53b318910219e90a2efed7a76 MANIFEST +SHA1 8f39f51f16a4dae68f72963c3485d5cd96cb5acd MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 301638b614bacfc838584fdf2fb3984ff3ecb76c25d5d514c6b348d647fbf4fa META.json +SHA256 ee9df724c0e4d218f24c6501ad5cf160a3cfb6579e5cfeb73ceb9cbe77198d04 META.yml SHA1 df4038743695e46c1ca610b5404eba694ef4c980 Makefile.PL SHA1 4d78ebc2e9d9e82037ff39c26cc2604dadd6da88 README SHA1 cd66abcc487e1a53d5660e119e93015cba280db5 lib/WWW/Google/URLShortener.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.