diff --git a/perl-JSON.spec b/perl-JSON.spec
index 9a24fc5..a2d3d9a 100644
--- a/perl-JSON.spec
+++ b/perl-JSON.spec
@@ -9,13 +9,22 @@ URL:            http://search.cpan.org/dist/JSON/
 Requires:       perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
 BuildArch:      noarch
 
+BuildRequires:  perl(base)
+BuildRequires:  perl(Carp)
 BuildRequires:  perl(CGI)
+BuildRequires:  perl(Data::Dumper)
+BuildRequires:  perl(Encode)
+BuildRequires:  perl(Exporter)
 BuildRequires:  perl(ExtUtils::MakeMaker)
+BuildRequires:  perl(File::Spec)
 BuildRequires:  perl(HTTP::Daemon)
+BuildRequires:  perl(Math::BigFloat)
+BuildRequires:  perl(Math::BigInt)
 BuildRequires:  perl(LWP::UserAgent)
 BuildRequires:  perl(Scalar::Util)
 BuildRequires:  perl(Test::More)
 BuildRequires:  perl(Test::Pod)
+BuildRequires:  perl(Tie::IxHash)
 
 
 %{?perl_default_filter:
@@ -63,6 +72,7 @@ make test
 %changelog
 * Fri Jun 15 2012 Petr Pisar <ppisar@redhat.com> - 2.53-5
 - Perl 5.16 rebuild
+- Specify all dependencies
 
 * Fri Jan 13 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.53-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild