diff --git a/perl-PathTools.spec b/perl-PathTools.spec
index 47d9a79..295f2c2 100644
--- a/perl-PathTools.spec
+++ b/perl-PathTools.spec
@@ -1,7 +1,7 @@
 %global cpan_version 3.47
 Name:           perl-PathTools
 Version:        %(echo '%{cpan_version}' | tr _ .)
-Release:        310%{?dist}
+Release:        311%{?dist}
 Summary:        PathTools Perl module (Cwd, File::Spec)
 License:        (GPL+ or Artistic) and BSD
 Group:          Development/Libraries
@@ -13,6 +13,7 @@ BuildRequires:  perl
 BuildRequires:  perl(ExtUtils::MakeMaker)
 # Run-time:
 BuildRequires:  perl(Carp)
+BuildRequires:  perl(constant)
 BuildRequires:  perl(Exporter)
 # File::Basename not needed because of removed File::Spec::VMS
 BuildRequires:  perl(Scalar::Util)
@@ -64,6 +65,9 @@ make test
 %{_mandir}/man3/*
 
 %changelog
+* Tue Jan 13 2015 Petr Pisar <ppisar@redhat.com> - 3.47-311
+- Require constant module
+
 * Wed Sep 03 2014 Jitka Plesnikova <jplesnik@redhat.com> - 3.47-310
 - Increase release to favour standalone package