--- Makefile.PL
+++ Makefile.PL
@@ -4,7 +4,7 @@ use warnings;
 
 use 5.012;
 
-use ExtUtils::MakeMaker 6.78;
+use ExtUtils::MakeMaker 6.30;
 
 my %WriteMakefileArgs = (
   "ABSTRACT" => "a sophisticated exporter for custom-built routines",