diff --git a/.gitignore b/.gitignore
index 61e65d2..a800e64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-String-CRC32-1.3.tar.gz
-String-CRC32-1.4.tar.gz
+/String-CRC32-[0-9.]*.tar.gz
diff --git a/perl-String-CRC32.spec b/perl-String-CRC32.spec
index 642e167..c7e4016 100644
--- a/perl-String-CRC32.spec
+++ b/perl-String-CRC32.spec
@@ -1,17 +1,17 @@
 Name:           perl-String-CRC32
-Version:        1.4
-Release:        20%{?dist}
+Version:        1.5
+Release:        1%{?dist}
 Summary:        Perl interface for cyclic redundancy check generation
 Group:          Development/Libraries
 License:        Public Domain
 URL:            http://search.cpan.org/dist/String-CRC32/
 Source0:        http://search.cpan.org/CPAN/authors/id/S/SO/SOENKE/String-CRC32-%{version}.tar.gz
-BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(id -nu)
 BuildRequires:  perl(ExtUtils::MakeMaker)
 # Run-time:
 BuildRequires:  perl(DynaLoader)
 BuildRequires:  perl(Exporter)
-Requires:       perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
+Requires:       perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
 
 %{?perl_default_filter}
 
@@ -30,31 +30,35 @@ differ from those of the programs mentioned above.
 %setup -q -n String-CRC32-%{version}
 
 %build
-%{__perl} Makefile.PL INSTALLDIRS=vendor
+perl Makefile.PL INSTALLDIRS=vendor
 make %{?_smp_mflags}
 
 %install
-rm -rf $RPM_BUILD_ROOT
-make pure_install PERL_INSTALL_ROOT=$RPM_BUILD_ROOT
-find $RPM_BUILD_ROOT -type f -name .packlist -exec rm -f {} ';'
-find $RPM_BUILD_ROOT -type f -name '*.bs' -empty -exec rm -f {} ';'
-find $RPM_BUILD_ROOT -depth -type d -exec rmdir {} 2>/dev/null ';'
-chmod -R u+w $RPM_BUILD_ROOT/*
+rm -rf %{buildroot}
+make pure_install DESTDIR=%{buildroot}
+find %{buildroot} -type f -name .packlist -exec rm -f {} ';'
+find %{buildroot} -type f -name '*.bs' -empty -exec rm -f {} ';'
+%{_fixperms} %{buildroot}
 
 %check
 make test
 
 %clean
-rm -rf $RPM_BUILD_ROOT
+rm -rf %{buildroot}
 
 %files
-%defattr(-,root,root,-)
 %doc README
 %{perl_vendorarch}/String/
 %{perl_vendorarch}/auto/String/
-%{_mandir}/man3/*.3*
+%{_mandir}/man3/String::CRC32.3pm*
 
 %changelog
+* Wed Jan  1 2014 Paul Howarth <paul@city-fan.org> - 1.5-1
+- Update to 1.5 (document use of binmode)
+- Drop %%defattr, redundant since rpm 4.4
+- No need to remove empty directories from the buildroot
+- Use %%{_fixperms} macro rather than our own chmod incantation
+
 * Sun Aug 04 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.4-20
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
 
@@ -83,7 +87,7 @@ rm -rf $RPM_BUILD_ROOT
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
 
 * Wed Dec 22 2010 Marcela Maslanova <mmaslano@redhat.com> - 1.4-11
-- 661697 rebuild for fixing problems with vendorach/lib
+- Rebuild to fix problems with vendorarch/lib (#661697)
 
 * Thu May 06 2010 Marcela Maslanova <mmaslano@redhat.com> - 1.4-10
 - Mass rebuild with perl-5.12.0
diff --git a/sources b/sources
index d01d51a..5285cf6 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-9b241bc4a482a3aa59fbb1429bc30546  String-CRC32-1.4.tar.gz
+3a9516454722823bd7965d1128d53869  String-CRC32-1.5.tar.gz