diff --git a/t/00-load.t b/t/00-load.t
index 80b2dc7..4ed7ef8 100644
--- a/t/00-load.t
+++ b/t/00-load.t
@@ -1,5 +1,6 @@
-#!perl -T
+#!perl -w
 
+use warnings;
 use strict;
 
 use Test::Most tests => 2;
diff --git a/t/20-new.t b/t/20-new.t
index baa65c0..5b9627e 100644
--- a/t/20-new.t
+++ b/t/20-new.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 
diff --git a/t/allow.t b/t/allow.t
index 5522c29..c70f986 100644
--- a/t/allow.t
+++ b/t/allow.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/boiler.t b/t/boiler.t
index 38e6b36..d4d0bfe 100644
--- a/t/boiler.t
+++ b/t/boiler.t
@@ -1,4 +1,4 @@
-#!perl -T
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/changes.t b/t/changes.t
index 5ed90da..5f949ac 100644
--- a/t/changes.t
+++ b/t/changes.t
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -wT
+#!/usr/bin/perl -w
 
 use strict;
 use warnings;
diff --git a/t/cookies.t b/t/cookies.t
index ccd7719..903d702 100644
--- a/t/cookies.t
+++ b/t/cookies.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/is_mobile.t b/t/is_mobile.t
index 653fb06..df0496d 100644
--- a/t/is_mobile.t
+++ b/t/is_mobile.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/is_robot.t b/t/is_robot.t
index 726ab88..a3cc06d 100644
--- a/t/is_robot.t
+++ b/t/is_robot.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/is_search.t b/t/is_search.t
index 1ef8823..c8cc9d0 100644
--- a/t/is_search.t
+++ b/t/is_search.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/is_tablet.t b/t/is_tablet.t
index 3a183bd..9203376 100644
--- a/t/is_tablet.t
+++ b/t/is_tablet.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/json.t b/t/json.t
index 1fd50f7..27bb077 100644
--- a/t/json.t
+++ b/t/json.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/logdir.t b/t/logdir.t
index ead1aaa..6a43726 100644
--- a/t/logdir.t
+++ b/t/logdir.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/manifest.t b/t/manifest.t
index 6627ee8..0a70106 100644
--- a/t/manifest.t
+++ b/t/manifest.t
@@ -1,4 +1,4 @@
-#!perl -T
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/metrics.t b/t/metrics.t
index 76d5dac..8bdb7e6 100644
--- a/t/metrics.t
+++ b/t/metrics.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/param.t b/t/param.t
index 797ce54..745801f 100644
--- a/t/param.t
+++ b/t/param.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/params.t b/t/params.t
index c099559..dd94abc 100644
--- a/t/params.t
+++ b/t/params.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/pod-snippets.t b/t/pod-snippets.t
index c845e1e..0f7e03c 100644
--- a/t/pod-snippets.t
+++ b/t/pod-snippets.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/protocol.t b/t/protocol.t
index 332201e..17ff8b1 100644
--- a/t/protocol.t
+++ b/t/protocol.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/rootdir.t b/t/rootdir.t
index 847bdd4..fe28139 100644
--- a/t/rootdir.t
+++ b/t/rootdir.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/site.t b/t/site.t
index a99355a..10289a3 100644
--- a/t/site.t
+++ b/t/site.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/status.t b/t/status.t
index 08f5f53..785652b 100644
--- a/t/status.t
+++ b/t/status.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/tmpdir.t b/t/tmpdir.t
index 4ae9765..465ec57 100644
--- a/t/tmpdir.t
+++ b/t/tmpdir.t
@@ -1,4 +1,4 @@
-#!perl -Tw
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/untaint.t b/t/untaint.t
index c027c57..013bacc 100644
--- a/t/untaint.t
+++ b/t/untaint.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/unused.t b/t/unused.t
index 7dc052e..5ff94ef 100644
--- a/t/unused.t
+++ b/t/unused.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!perl -w
 
 use strict;
 use warnings;
diff --git a/t/xml.t b/t/xml.t
index 4cd07b7..0ab7516 100644
--- a/t/xml.t
+++ b/t/xml.t
@@ -1,4 +1,4 @@
-#!perl -wT
+#!/usr/bin/env perl
 
 use strict;
 use warnings;