diff --git a/bin/chkstow.in b/bin/chkstow.in
index 07e18f1..c35ba26 100755
--- a/bin/chkstow.in
+++ b/bin/chkstow.in
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-require 5.6.1;
+require 5.006_001;
 
 use File::Find;
 use Getopt::Long;
diff --git a/bin/stow.in b/bin/stow.in
index 8d70f76..e8fa64b 100755
--- a/bin/stow.in
+++ b/bin/stow.in
@@ -409,7 +409,7 @@ translation approved by the Free Software Foundation.
 use strict;
 use warnings;
 
-require 5.6.1;
+require 5.006_001;
 
 use POSIX qw(getcwd);
 use Getopt::Long;