diff --git a/Makefile.PL b/Makefile.PL
index 480d8f4..b2cbce4 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -3,15 +3,20 @@ use warnings;
 use ExtUtils::MakeMaker;
 
 WriteMakefile(
-    NAME         => 'Grammar::Improver',        # Name of the module
-    VERSION_FROM => 'lib/Grammar/Improver.pm',    # Automatically fetch version from the module
-    AUTHOR       => 'Nigel Horne <njh@bandsman.co.uk>', # Author information
-    ABSTRACT     => 'A Perl module for improving grammar using an external API.',
+	NAME		 => 'Grammar::Improver',		# Name of the module
+	VERSION_FROM => 'lib/Grammar/Improver.pm',	# Automatically fetch version from the module
+	AUTHOR	   => 'Nigel Horne <njh@bandsman.co.uk>', # Author information
+	ABSTRACT	 => 'A Perl module for improving grammar using an external API.',
 	((defined($ExtUtils::MakeMaker::VERSION) && ($ExtUtils::MakeMaker::VERSION >= 6.3002))
 		? ('LICENSE'=> 'GPL')
 		: ()),
-    PREREQ_PM    => {                        # Dependencies (with versions)
-        'LWP::UserAgent' => 0,
-        'JSON::XS'       => 0,
-    },
+	PREREQ_PM	=> {						# Dependencies (with versions)
+		'ExtUtils::MakeMaker' => 6.64,	# Minimum version for TEST_REQUIRES
+		'LWP::UserAgent' => 0,
+		'JSON::XS'	   => 0
+	}, TEST_REQUIRES => {
+		'Test::DescribeMe' => 0,
+		'Test::Most' => 0,
+		'Test::Needs' => 0
+	},
 );