diff --git a/composer.json b/composer.json
index e240cbc..94e7c3d 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "guzzlehttp/psr7": "^1.0",
         "php-http/client-integration-tests": "^2.0",
         "phpunit/phpunit": "^7.5",
-        "zendframework/zend-diactoros": "^2.0"
+        "laminas/laminas-diactoros": "^2.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Functional/HttpAsyncClientDiactorosTest.php b/tests/Functional/HttpAsyncClientDiactorosTest.php
index 2ef7b6c..c8dc1cf 100644
--- a/tests/Functional/HttpAsyncClientDiactorosTest.php
+++ b/tests/Functional/HttpAsyncClientDiactorosTest.php
@@ -6,8 +6,8 @@
 
 use Http\Client\Curl\Client;
 use Http\Client\HttpAsyncClient;
-use Zend\Diactoros\ResponseFactory;
-use Zend\Diactoros\StreamFactory;
+use Laminas\Diactoros\ResponseFactory;
+use Laminas\Diactoros\StreamFactory;
 
 /**
  * @covers \Http\Client\Curl\Client
diff --git a/tests/Functional/HttpClientDiactorosTest.php b/tests/Functional/HttpClientDiactorosTest.php
index 854bcdc..6ce67ce 100644
--- a/tests/Functional/HttpClientDiactorosTest.php
+++ b/tests/Functional/HttpClientDiactorosTest.php
@@ -7,12 +7,12 @@
 use Http\Client\Curl\Client;
 use Http\Client\HttpClient;
 use Psr\Http\Message\StreamInterface;
-use Zend\Diactoros\ResponseFactory;
-use Zend\Diactoros\Stream;
-use Zend\Diactoros\StreamFactory;
+use Laminas\Diactoros\ResponseFactory;
+use Laminas\Diactoros\Stream;
+use Laminas\Diactoros\StreamFactory;
 
 /**
- * Testing synchronous requests with Zend Diactoros factories.
+ * Testing synchronous requests with Laminas Diactoros factories.
  */
 class HttpClientDiactorosTest extends HttpClientTestCase
 {
diff --git a/tests/Unit/ClientTest.php b/tests/Unit/ClientTest.php
index 0922733..f198930 100644
--- a/tests/Unit/ClientTest.php
+++ b/tests/Unit/ClientTest.php
@@ -9,7 +9,7 @@
 use Psr\Http\Message\ResponseFactoryInterface;
 use Psr\Http\Message\StreamFactoryInterface;
 use Symfony\Component\OptionsResolver\Exception\InvalidOptionsException;
-use Zend\Diactoros\Request;
+use Laminas\Diactoros\Request;
 
 /**
  * @covers \Http\Client\Curl\Client