diff --git a/perl-MIME-EncWords.spec b/perl-MIME-EncWords.spec
index c5081fe..f058a5f 100644
--- a/perl-MIME-EncWords.spec
+++ b/perl-MIME-EncWords.spec
@@ -1,19 +1,49 @@
 Name:           perl-MIME-EncWords
 Version:        1.014.3
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Deal with RFC 2047 encoded words (improved)
 License:        GPL+ or Artistic
 Group:          Development/Libraries
 URL:            http://search.cpan.org/dist/MIME-EncWords/
 Source0:        http://search.cpan.org/CPAN/authors/id/N/NE/NEZUMI/MIME-EncWords-%{version}.tar.gz
 BuildArch:      noarch
-BuildRequires:  perl >= 0:5.005
+BuildRequires:  coreutils
+BuildRequires:  findutils
+BuildRequires:  make
+BuildRequires:  perl
 BuildRequires:  perl(ExtUtils::MakeMaker)
-BuildRequires:  perl(MIME::Charset) >= 1.006.2
+BuildRequires:  sed
+# Run-time:
+BuildRequires:  perl(base)
+BuildRequires:  perl(Carp)
+# MIME::Charset::USE_ENCODE is "Encode" on recent Perl
+BuildRequires:  perl(Encode) >= 1.98
+BuildRequires:  perl(Encode::Encoding)
+BuildRequires:  perl(Exporter)
+BuildRequires:  perl(MIME::Base64) >= 2.13
+BuildRequires:  perl(MIME::Charset) >= 1.10.1
+# MIME::Charset::_Compat not used
+BuildRequires:  perl(strict)
+# Unicode::String not used
+BuildRequires:  perl(vars)
+BuildRequires:  perl(warnings)
+# Tests:
+BuildRequires:  perl(charnames)
+# Encode::CN not used
+# Encode::JP not used
+BuildRequires:  perl(Test)
 BuildRequires:  perl(Test::More)
-BuildRequires:  perl(Test::Pod)
+BuildRequires:  perl(utf8)
+# Optional tests:
+BuildRequires:  perl(Test::Pod) >= 1.00
 Requires:       perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
+# MIME::Charset::USE_ENCODE is "Encode" on recent Perl
+Requires:       perl(Encode) >= 1.98
+Requires:       perl(MIME::Base64) >= 2.13
+Requires:       perl(MIME::Charset) >= 1.10.1
 
+# Remove under-specfied dependencies
+%global __requires_exclude %{?__requires_exclude:%{__requires_exclude}|}^perl\\((MIME::Base64|MIME::Charset)\\)$
 
 %description
 MIME::EncWords is aimed to be another implementation of MIME::Words so that it
@@ -61,6 +91,9 @@ make test
 
 
 %changelog
+* Thu Oct 15 2015 Petr Pisar <ppisar@redhat.com> - 1.014.3-4
+- Specify all dependencies
+
 * Thu Jun 18 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.014.3-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild