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 20 Feb 2009 12:52:47 PM JST gpg: using DSA key 31F9562596406EA0 gpg: Can't check signature: No public key --- SIGNATURE Fri Feb 20 12:52:47 2009 +++ @@ -1,6 +1,6 @@ SHA1 93793c21a7cc3cd2aa546fac076c2107d0efc679 Changes SHA1 fde2e498ced242649142d34769cdb32ec5ba17dd MANIFEST -SHA1 2c76cb02a449f0c4dcbc22d23f4f05c6a77ce6ae META.yml +SHA1 cd517ac328249033b79b7f43f8b6b1f1a654bd80 META.yml SHA1 bc05af0bffcf1216bc552bd0e62608902e7b15bf Makefile.PL SHA1 fa0e7c54e60cea400aab16e8f4b3044958a87790 README SHA1 8cb3d05920af2055065e8fd586857b7c85a9825f lib/Test/HTTP/Server/Simple.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 a META.json to the distribution. Your buildtool should be able to autogenerate it.

Define the license if you are using in Build.PL. If you are using MakeMaker (Makefile.PL) you should upgrade to ExtUtils::MakeMaker version 6.31.

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.

Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).

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