ensure we create a v2 meta file

diff --git a/Makefile.PL b/Makefile.PL
index 41ac10b..9ced0d0 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -9,6 +9,7 @@ WriteMakefile(
   VERSION_FROM => 'lib/Safe/Isa.pm',
 
   META_MERGE => {
+    'meta-spec' => { version => 2 },
     dynamic_config => 0,
 
     resources => {