diff --git a/perl-MetaCPAN-API.spec b/perl-MetaCPAN-API.spec
index c6c3696..03ec6c5 100644
--- a/perl-MetaCPAN-API.spec
+++ b/perl-MetaCPAN-API.spec
@@ -1,47 +1,44 @@
 Name:           perl-MetaCPAN-API
-Version:        0.50
-Release:        7%{?dist}
-Summary:        Comprehensive, DWIM-featured API to MetaCPAN
+Version:        0.51
+Release:        1%{?dist}
+Summary:        A comprehensive, DWIM-featured API to MetaCPAN
 License:        GPL+ or Artistic
-Group:          Development/Libraries
 URL:            http://search.cpan.org/dist/MetaCPAN-API/
-Source0:        http://www.cpan.org/authors/id/X/XS/XSAWYERX/MetaCPAN-API-%{version}.tar.gz
+Source0:        http://www.cpan.org/authors/id/H/HA/HAARG/MetaCPAN-API-%{version}.tar.gz
 BuildArch:      noarch
 # Build
+BuildRequires:  coreutils
+BuildRequires:  findutils
+BuildRequires:  make
 BuildRequires:  perl
 BuildRequires:  perl-generators
 BuildRequires:  perl(ExtUtils::MakeMaker)
 # Module
 BuildRequires:  perl(Carp)
-BuildRequires:  perl(HTTP::Tiny)
-BuildRequires:  perl(JSON)
+BuildRequires:  perl(HTTP::Tiny) >= 0.014
+BuildRequires:  perl(IO::Socket::SSL)
+BuildRequires:  perl(JSON::MaybeXS) >= 1.001000
 BuildRequires:  perl(Moo) >= 1.000001
 BuildRequires:  perl(Moo::Role)
 BuildRequires:  perl(namespace::autoclean)
+BuildRequires:  perl(strict)
 BuildRequires:  perl(Try::Tiny)
 BuildRequires:  perl(Types::Standard)
-BuildRequires:  perl(URI::Escape)
+BuildRequires:  perl(warnings)
 # Test suite
-BuildRequires:  perl(File::Spec)
-BuildRequires:  perl(IO::Handle)
-BuildRequires:  perl(IPC::Open3)
+BuildRequires:  perl(Exporter)
+BuildRequires:  perl(lib)
 BuildRequires:  perl(Test::Fatal)
 BuildRequires:  perl(Test::More)
 BuildRequires:  perl(Test::RequiresInternet)
 BuildRequires:  perl(Test::TinyMocker)
-# Author/Release tests
-BuildRequires:  perl(Pod::Coverage::TrustPod)
-BuildRequires:  perl(Test::Perl::Critic)
-BuildRequires:  perl(Test::Pod) >= 1.41
-BuildRequires:  perl(Test::Pod::Coverage) >= 1.08
 # Runtime
 Requires:       perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
-
-%{?perl_default_filter}
+Requires:       perl(IO::Socket::SSL)
 
 %description
 This is a hopefully-complete API-compliant interface to MetaCPAN
-(https://metacpan.org) with DWIM capabilities, to make your life easier.
+(https://metacpan.org/) with DWIM capabilities, to make your life easier.
 
 However, it has been completely rewritten to address a multitude of problems,
 and is now available under the new official name: MetaCPAN::Client.
@@ -57,23 +54,41 @@ make %{?_smp_mflags}
 
 %install
 make pure_install DESTDIR=%{buildroot}
-find %{buildroot} -type f -name .packlist -exec rm -f {} \;
-%{_fixperms} %{buildroot}
+find %{buildroot} -type f -name .packlist -delete
+%{_fixperms} -c %{buildroot}
 
 %check
-make test AUTHOR_TESTING=1 RELEASE_TESTING=1
+make test
 
 %files
-%if 0%{?_licensedir:1}
 %license LICENSE
-%else
-%doc LICENSE
-%endif
 %doc Changes README
 %{perl_vendorlib}/MetaCPAN/
-%{_mandir}/man3/*
+%{_mandir}/man3/MetaCPAN::API.3*
+%{_mandir}/man3/MetaCPAN::API::Author.3*
+%{_mandir}/man3/MetaCPAN::API::Autocomplete.3*
+%{_mandir}/man3/MetaCPAN::API::Distribution.3*
+%{_mandir}/man3/MetaCPAN::API::Favorite.3*
+%{_mandir}/man3/MetaCPAN::API::File.3*
+%{_mandir}/man3/MetaCPAN::API::Module.3*
+%{_mandir}/man3/MetaCPAN::API::Rating.3*
+%{_mandir}/man3/MetaCPAN::API::POD.3*
+%{_mandir}/man3/MetaCPAN::API::Release.3*
+%{_mandir}/man3/MetaCPAN::API::Source.3*
 
 %changelog
+* Sun Jun 18 2017 Paul Howarth <paul@city-fan.org> - 0.51-1
+- Update to 0.51
+  - Switch to v1 API
+    - Old complex query forms may stop working with new API
+  - Stop relying on . being in @INC
+  - Drop URI::Escape prereq
+  - Switch from JSON to JSON::MaybeXS
+  - Test clean-ups
+- This release by HAARG → update source URL
+- Make %%files list more explicit
+- Drop redundant Group: tag and %%{?perl_default_filter}
+
 * Tue Jun 06 2017 Jitka Plesnikova <jplesnik@redhat.com> - 0.50-7
 - Perl 5.26 rebuild
 
diff --git a/sources b/sources
index dbd1270..1f96e9d 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-06967b570f5eae2ef627c3667e40a55f  MetaCPAN-API-0.50.tar.gz
+SHA512 (MetaCPAN-API-0.51.tar.gz) = 2bed1f46b19918dc17d1ee3ee17d1d557509c9e84617192a62fc4cef8a7c444547d373f028e52ff21eae63955be53fd018dc9bced580981bcdaf3a5f5bc046e4