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 27 Sep 2014 09:10:22 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Sat Sep 27 09:10:22 2014 +++ @@ -1,6 +1,8 @@ SHA1 1e5d8975eec77bcd35a5a042ee279534f8a7c81a Changes -SHA1 841b3700466c1512825b1f99203a6501e680c2f9 MANIFEST +SHA1 02692d3d35d4c40215da3f6848b7053601a073ef MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 f16196c206ae14881b65329d4a0b83585a1767c9164743fc3018e9cfaeb77042 META.json +SHA256 dbf8d466af1e5f2f2d533935232327e233faf675a26d315ba24ffb3519f287d7 META.yml SHA1 bd625297c7f23914e69367907cb87f629c3804d1 Makefile.PL SHA1 6e3e9329068f3dc20f51bab21ab19110a8d4a092 README SHA1 9370109b358962f1ad860ca6bbc17937fe58873f lib/Test/Excel.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.