diff --git a/composer.json b/composer.json
index 684fe93dd71e4074e50a8c7a75a76ac4d9f0f5f7..59862a66c325ce45fd0f4ca59baa923df6ad58ad 100644
--- a/composer.json
+++ b/composer.json
@@ -4,5 +4,8 @@
         "psr-0": {
             "HAB": "src/"
         }
+    },
+    "require": {
+        "guzzlehttp/guzzle": "~6.0"
     }
 }