diff --git a/examples/context.php b/examples/context.php
index cfc21dc..05f72c2 100755
--- a/examples/context.php
+++ b/examples/context.php
@@ -1,5 +1,5 @@
 #!/usr/bin/env php
-<?php
+<?php declare(strict_types=1);
 require dirname(__DIR__).'/vendor/autoload.php';
 
 use Revolt\EventLoop;
diff --git a/examples/process.php b/examples/process.php
index bef5f70..418030b 100755
--- a/examples/process.php
+++ b/examples/process.php
@@ -1,5 +1,5 @@
 #!/usr/bin/env php
-<?php
+<?php declare(strict_types=1);
 require dirname(__DIR__).'/vendor/autoload.php';
 
 use Amp\ByteStream;
diff --git a/examples/shared-memory-parcel.php b/examples/shared-memory-parcel.php
index 0dd783c..fd8b085 100755
--- a/examples/shared-memory-parcel.php
+++ b/examples/shared-memory-parcel.php
@@ -1,5 +1,5 @@
 #!/usr/bin/env php
-<?php
+<?php declare(strict_types=1);
 
 require __DIR__ . '/../vendor/autoload.php';