diff --git a/Makefile.PL b/Makefile.PL
index 2b7046d..4cb5a81 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -1,10 +1,13 @@
 use inc::Module::Install;
+use 5.008001;
 name 'String-Diff';
 all_from 'lib/String/Diff.pm';
 
-requires $_ for (qw/ Algorithm::Diff /);
+requires 'Algorithm::Diff';
 
 build_requires 'Test::More';
+build_requires 'YAML';
+
 use_test_base;
 auto_include;
 WriteAll;