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 09:23:56 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Sat Aug 30 09:23:56 2014 +++ @@ -1,6 +1,8 @@ SHA1 42fd4e50cb5534d57f778fc9400e60056c67b136 Changes -SHA1 7d2eacff39bf2db55c456ce144f8769859558d6a MANIFEST +SHA1 132d0c9818e55ba90188ab9cf78413b45ea226be MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 2ce768d9e0c7e20017a8816967d2d46833e027165a2cf293103c1563c5664dc4 META.json +SHA256 7cb9ebb27347307a163551e525c7a957021591a70e2eae217ba931f0702f4174 META.yml SHA1 6aaed5fb96121c7d9b2aba530ed56ada940ec7e1 Makefile.PL SHA1 cd561c674b0349bacda740b20e364b02a3173784 README SHA1 25b1fc8f5fc37471f09d27a204a4c95f2fa35288 lib/WWW/Google/PageSpeedOnline.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.