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 Wed 30 Sep 2009 05:26:57 AM JST gpg: using DSA key 0B43A050F80BD927 gpg: Can't check signature: No public key --- SIGNATURE Wed Sep 30 05:26:57 2009 +++ @@ -28,4 +28,4 @@ SHA1 952f76579eefab5fd584d1955c2a9983e1e7a9af www/test-daily/_td/default_page.css SHA1 57ae6470b584d6be4c4859db46bce461d4705a5b www/test-daily/_td/default_report.css SHA1 39bb53546142e9bd94264d15abae7adf1397b205 www/test-daily/_td/default_report.js -SHA1 58b83c75c0ce6d70066070cbce6ccfa90a575923 www/test-daily/_td/jquery-1.3.2.js +SHA1 f0b95e99225f314fbe37ccf6b74ce2f916c517de www/test-daily/_td/jquery-1.3.2.js ==> 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.

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.