diff --git a/CHANGELOG.md b/CHANGELOG.md
index beaba2e..6fb7711 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@
 ### Added
 
 - Discovery support for CakePHP adapter
+- Discovery support for Zend adapter
+- Discovery support for Artax adapter
 
 ## 1.2.1 - 2017-03-02
 
diff --git a/src/Strategy/CommonClassesStrategy.php b/src/Strategy/CommonClassesStrategy.php
index 9b34581..6e42bee 100644
--- a/src/Strategy/CommonClassesStrategy.php
+++ b/src/Strategy/CommonClassesStrategy.php
@@ -21,6 +21,8 @@
 use Http\Adapter\React\Client as React;
 use Http\Adapter\Buzz\Client as Buzz;
 use Http\Adapter\Cake\Client as Cake;
+use Http\Adapter\Zend\Client as Zend;
+use Http\Adapter\Artax\Client as Artax;
 
 /**
  * @internal
@@ -61,6 +63,8 @@ final class CommonClassesStrategy implements DiscoveryStrategy
             ['class' => Buzz::class, 'condition' => Buzz::class],
             ['class' => React::class, 'condition' => React::class],
             ['class' => Cake::class, 'condition' => Cake::class],
+            ['class' => Zend::class, 'condition' => Zend::class],
+            ['class' => Artax::class, 'condition' => Artax::class],
         ],
     ];