diff --git a/composer.json b/composer.json
index eedb3d8..3ff748a 100644
--- a/composer.json
+++ b/composer.json
@@ -19,8 +19,7 @@
         "psr/http-message": "^1.0",
         "guzzlehttp/guzzle": "^6.0",
         "relay/relay": "^1.0",
-        "zendframework/zend-httphandlerrunner": "^1.0",
-        "zendframework/zend-diactoros": "^2.1"
+        "slim/slim": "^3.11"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.0|^6.0|^7.0",
diff --git a/src/Proxy.php b/src/Proxy.php
index 3247961..4f41b0c 100644
--- a/src/Proxy.php
+++ b/src/Proxy.php
@@ -7,8 +7,8 @@
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Relay\RelayBuilder;
-use Zend\Diactoros\Response;
-use Zend\Diactoros\Uri;
+use Slim\Http\Response;
+use Slim\Http\Uri;
 
 class Proxy
 {