diff --git a/Makefile.PL b/Makefile.PL
index eb8ecc3..56ab8ee 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -34,7 +34,8 @@
     'utf8'            => 0,
     'bytes'           => 0,
     'Pod::Usage'      => 0,
-    'Cache::FastMmap' => 1.40
+    'Cache::FastMmap' => 1.40,
+    'Sys::Info'       => 0.78
   },
   MIN_PERL_VERSION => '5.014',
   test => {