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 06:29:28 AM JST gpg: using RSA key DA172575A8EC2FE9 gpg: Can't check signature: No public key --- SIGNATURE Sat Aug 30 06:29:28 2014 +++ @@ -1,6 +1,8 @@ SHA1 59bace2fb0f2cfce284b6ecff20194fa748f11b6 Changes -SHA1 6b205978e3f3ae4883861cddbcfbfed614f48614 MANIFEST +SHA1 9aea72266e54e96b62a1df007322de6bb46b44bc MANIFEST SHA1 5f29cdcbfacb9c46ac155fff9844aceeb064aef1 MANIFEST.SKIP +SHA256 802e87946bc21921cdac430bf3c32d37d0bb77d415c2a03f585eace8ce0966cc META.json +SHA256 a52f77defa1adbb1db411bf68fc6c8e55c644470e5c41c94fd80a5b6aedeb913 META.yml SHA1 5bee1aa6dc315aa61462212d21a951f63275d300 Makefile.PL SHA1 ceed629f4c6f0f46329e9d3ac9c0166bf250a205 README SHA1 f1b1d23d1b5c60f5abb8d176faf135dac9b0b890 lib/WWW/Google/DistanceMatrix.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.