diff --git a/check-disorder.pl b/check-disorder.pl
index 3f0486c..bbfa46e 100755
--- a/check-disorder.pl
+++ b/check-disorder.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use 5.010;
 use strict;
diff --git a/gff3sort.pl b/gff3sort.pl
index c04268a..b802c17 100755
--- a/gff3sort.pl
+++ b/gff3sort.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use 5.010;
 use strict;