diff --git a/composer.json b/composer.json
index 353f9f0..2045f7c 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
     },
     "require": {
         "omnipay/common": "^3",
-        "braintree/braintree_php": "^5.0"
+        "braintree/braintree_php": "^6.0"
     },
     "require-dev": {
         "omnipay/tests": "^3"