diff --git a/perl-IO-String.spec b/perl-IO-String.spec
index 8d3dd14..1014f12 100644
--- a/perl-IO-String.spec
+++ b/perl-IO-String.spec
@@ -8,7 +8,14 @@ URL:            http://search.cpan.org/dist/IO-String/
 Source0:        http://www.cpan.org/authors/id/G/GA/GAAS/IO-String-%{version}.tar.gz
 BuildArch:      noarch
 BuildRequires:  perl(ExtUtils::MakeMaker)
+# Run-time:
+BuildRequires:  perl(Data::Dumper)
+BuildRequires:  perl(IO::Handle)
+# Tests:
+BuildRequires:  perl(Test)
 Requires:       perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
+Requires:       perl(Data::Dumper)
+Requires:       perl(IO::Handle)
 
 %description
 The "IO::String" module provides the "IO::File" interface for in-core
@@ -54,6 +61,7 @@ make test
 %changelog
 * Fri Jun 01 2012 Petr Pisar <ppisar@redhat.com> - 1.08-15
 - Clean spec file
+- Specify all dependencies
 
 * Fri Jan 13 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.08-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild