diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index 1328771a1..deb894fdc 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -5,6 +5,7 @@ package Slic3r;
 
 use strict;
 use warnings;
+require v5.10;
 
 our $VERSION = "0.6.1-dev";