diff --git a/.gitignore b/.gitignore
index 11c9673..e0d3c82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@ Date-Manip-6.07.tar.gz
 /Date-Manip-6.48.tar.gz
 /Date-Manip-6.49.tar.gz
 /Date-Manip-6.50.tar.gz
+/Date-Manip-6.51.tar.gz
diff --git a/perl-Date-Manip.spec b/perl-Date-Manip.spec
index a91ae3b..ce8c0c3 100644
--- a/perl-Date-Manip.spec
+++ b/perl-Date-Manip.spec
@@ -1,6 +1,6 @@
 Name:           perl-Date-Manip
-Version:        6.50
-Release:        3%{?dist}
+Version:        6.51
+Release:        1%{?dist}
 Summary:        Date manipulation routines
 Group:          Development/Libraries
 License:        GPL+ or Artistic
@@ -14,9 +14,12 @@ BuildRequires:  perl(strict)
 BuildRequires:  perl(warnings)
 # Runtime
 BuildRequires:  perl(Carp)
+# XXX: BuildRequires:  perl(Cwd)
 # XXX: BuildRequires:  perl(Data::Dumper)
 BuildRequires:  perl(Encode)
 BuildRequires:  perl(Exporter)
+# XXX: BuildRequires:  perl(File::Find)
+# XXX: BuildRequires:  perl(File::Spec)
 BuildRequires:  perl(integer)
 BuildRequires:  perl(IO::File)
 BuildRequires:  perl(Storable)
@@ -25,6 +28,9 @@ BuildRequires:  perl(utf8)
 BuildRequires:  perl(Test::Inter)
 BuildRequires:  perl(Test::More)
 Requires:       perl(:MODULE_COMPAT_%(eval "$(perl -V:version)"; echo $version))
+Requires:       perl(Cwd)
+Requires:       perl(File::Find)
+Requires:       perl(File::Spec)
 
 # This package was formerly known as perl-DateManip
 Provides: perl-DateManip = %{version}-%{release}
@@ -62,6 +68,11 @@ perl Build.PL installdirs=vendor
 %{_bindir}/dm_*
 
 %changelog
+* Wed Sep 02 2015 Petr Šabata <contyk@redhat.com> - 6.51-1
+- 6.51 bump, bugfixes and tzdata updates
+- This release changes the behavior of Date::Manip::Delta::value which
+  now returns an empty string rather than undef, where applicable
+
 * Thu Jun 18 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 6.50-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
 
diff --git a/sources b/sources
index 7bacad2..77f98b8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-62c86841f9c57ebe663178195c1df272  Date-Manip-6.50.tar.gz
+da85d48de8de695d67d0107a477fd501  Date-Manip-6.51.tar.gz