diff --git a/app/models/solidus_paypal_braintree/gateway.rb b/app/models/solidus_paypal_braintree/gateway.rb
index 4bbbb874b1c..e9684c36561 100644
--- a/app/models/solidus_paypal_braintree/gateway.rb
+++ b/app/models/solidus_paypal_braintree/gateway.rb
@@ -54,9 +54,15 @@ def capture(_money, _source, _gateway_options)
       raise NotImplementedError
     end
 
+    # Used to refeund a customer for an already settled transaction.
+    #
+    # @api public
+    # @param money [#to_s] amount to refund
+    # @param response_code [String] the transaction is of the payment to refund
     # @return [Response]
-    def credit(_money, _source, _response_code, _gateway_options)
-      raise NotImplementedError
+    def credit(money, _source, response_code, _gateway_options)
+      result = Braintree::Transaction.refund(response_code, money)
+      Response.build(result)
     end
 
     # Used to cancel a transaction before it is settled.
diff --git a/spec/fixtures/cassettes/braintree/authorize.yml b/spec/fixtures/cassettes/braintree/authorize.yml
index f0c7402ac80..92bc4c17dce 100644
--- a/spec/fixtures/cassettes/braintree/authorize.yml
+++ b/spec/fixtures/cassettes/braintree/authorize.yml
@@ -34,7 +34,7 @@ http_interactions:
       message: Created
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:11 GMT
+      - Fri, 02 Sep 2016 22:37:08 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -55,52 +55,52 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"8d93c049b9f16c9ffe371fbab80201f9"
+      - W/"a85394242d425cac7884c1f46aee6514"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - eb613b0b-b8c5-4d6d-ab8e-2c1354b040bf
+      - bd7d3219-5e82-4d47-ad73-ee20429ae9a7
       X-Runtime:
-      - '0.451787'
+      - '0.346961'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAP/4yVcAA+xYS2/jNhC+768IfGfkVxJnoWgfSFqk2EPR3RzaS0CJY4sN
-        Raok5dj99R2KkixF1CYF9tBDgRyimY9DzoMzHx1/OBTibA/acCVvZovz+ewM
-        ZKYYl7ub2cO3n8hm9iF5F1tNpaGZRVTy7uws5izZPl1dLS4vn+IIP5zMWGor
-        k9DK5krzv4HFUSNyWnssITFUQBzV/zpZVmmNux0JN4rgppA8fL2No7HYgWmh
-        KmmTxfx8Po+j5sspCtBZTqUlNMuckOB5jIUiVcLGUUhbn7ZKSUB3Jrm4mVld
-        wSzy1ina0m+CKs0QGVBkGqgFRqg9c77fzBh+Wl7ALFnOF5dkfk3my2/L5fvF
-        Av/+wAh0C+r1Vcn+3frTgibOxir0wH345F3MF5vlanPRJg+lW66NJZIW8PL8
-        qBR0WpepoqTyGNBAQbkIyJ8hNdyGbJW5kiH5lh5GUY36bsUpFwKLtnMxZOTH
-        e2isBsCiYEyDMaEQHCxI5lIxCREqo4LbkHkNO7xxoTgpvFqivhzB82KF6uO0
-        O17tVhMqypwu34RavYaSFWaDZ+NM9ZKDPm0ryULXpNOYpsyp1vQ4UGIge60o
-        ZKSk2nIMjQFrBRSAV3W4ImT81LNeM98zm1Kb5UFMzsvy/1r8j9ZiPztNZyRb
-        DoKZphb2hoDWShOMUamkgaBrNa7n+hCd3OOI+i6gNTHMWtjKdzG1G/v9eOVY
-        6KA7HAzP9IiaP8FXOc4aM05sXGqV4W4Yh/Z20BoeDMYJPNxxMXfDeko7sdJi
-        oSafStTsHYmYQtQRZIy7U2GMx7DRKfeKZy4PW8wvrsASSUGPfancqMdd/Dyf
-        QFl6IJ6EBFVwgKJsx3WqlAAqZ8mWCuMIUAdo6QF6QTKq21ls1RPIpFjmB1kg
-        vP7ympSHrmDdMNahK4E2iTtEsB2UXPucFkraPImjkWiEPALVQ2AtaXZrBjJx
-        bcSGu4U7Ua5EHdlwS+AF3QGptEhya0vzPoqowbZrzlNNuXRXoanhc+yFUUmP
-        rhs/FoBFyh6F2qmokk9SPcvzUu4+gNxzraTD3BgqWaoOSHq6LZoWpqGkyIQe
-        /EJXc17g1TlQYXM8OZwQPZkHMUi5Pen9Z6OqNOYNC29XCcfLeqiXmq7JO8KJ
-        c+wE7cmaQ9OjVqKHaAVNGI2psM3hmJJPJ8xAOmybakuclsoM+ruOlW3MFKuy
-        mk/3wtbJPKiS/K8KmjuEYswCx2Y7uk7ucoIsFDHsaeLSdPqG/A0vTfP6IDnH
-        EtTHwYzv5mONADTUJMbdNGTRqCjKNzLrDt9Z+O6zp0ZMvVx8hAwS2K6yP7YP
-        F1fbyONNS9rdUXvMxChsUpDQkuORxnLvcPTS407SRMm3O0HDTKdKTaZ5OcmE
-        evquOdU0j5Q4eRUjSDaIi2cg2S+QeCxtg1g88ot9XM8n2N4DNI5xU9drUAfe
-        imqb1UT3mXqBYLMYn21oFCmSe7qiXxMl3Ol928f3pISxVcz53s2pLcDUhHHb
-        qmfisznSYhjSShvPUhlYfISZthMNVOHc9ChuePshZvRafyMcDi4A2IZ1+BiO
-        7mOlIjELGayyLMBgMSMTvjvPy8pCqDSaEUK4RKJV+SeD+4kC5SUVj82LP46m
-        cEMa0/N1yHb6TGYS9Lqtmvu8ZqsjSDbHrkLwhrnSAzz6VgWeTM7PV6kHwrCH
-        12/6pP7/IxywEQrwvaqv7hb4eLHk10+/k2y7XF2v1uvF+hLm2xXbXGfbxXxz
-        1QtsOzaGjBPFXz99uSPZakXhar25oHCxWV7ihRrhfhSD8CF5O4HAaV/t3AFu
-        7z4//EzWV/OMZdfzDYNlTQW88hRHIFO/jfRfJKH2VEfZR/Tut8f7W7JOl5Cx
-        i+sVw2DCRdZmYrCfJqcHZ/KLymWL6on76O4FmtwqaLEnYXurhUAxVqJtnhLN
-        4Lv7cv/z/ecvd9i8pyAtGSxtXZYhVyd/KHgxC6f7ZAD4lm7VdvUAgY2j9rIM
-        5m7y7h8AAAD//wMApTSUsEkVAAA=
+        H4sIABT/yVcAA+xYS3PbNhC+51d4dIcpyXrZIzOPsZtxJ4dOEx/aiwckliJq
+        EmABUJby67sgSIoUwdidyaGH3sTdDwvsA7sftH1/yLOLPSjNpbidzC6nkwsQ
+        sWRc7G4nj99+IZvJ+/Dd1igqNI0NosJ3FxdbzsIiOS5okh62AX5YmTbUlDqk
+        pUml4t+BbYNaZLXmWECoaQbboPppZXGpFO52JFxLgptC+Pj1bhsMxRZMc1kK
+        E86ml9PpNqi/rCIHFadUGELj2AoJnkcbyCOZmW3g01anLSPi0V0Int1OjCph
+        EjjrFG2pN0GlYoj0KGIF1AAj1FxY328nDD8Nz2ESzqezFZlek+n823x+c7W+
+        mW7+xAi0C6r1ZcH+3frTgjrO2kj0wH645M2uN+vZerpukofShCttiKA5nJ8f
+        lRkd18UyL6g4ejSQU5555C8QaW58topUCp88oYdBVIOuW9uIZxkWbeuiz8jP
+        91AbBYBFwZgCrX0hOBgQzKZiFJLJmGbc+Mwr2OGN88VJ4tXKqsvhPS9WqDqO
+        u+PUdjWhWZHS+ZtQV6+hRInZ4PEwU53koE9JKZjvmrQaXZc5VYoee0oMZKcV
+        +YwUVBmOodFgTAY54FXtr/AZP/Ws18x3zEbUxKkXk/Ki+L8W/6O12M1O3RlJ
+        wiFjuq6FvSaglFQEY1RIocHrWoXruN5Hhw84on4IaEz0s+a38kNM5cZ+P1w5
+        FFroDgfDCz2i5i9wVY6zRg8Tuy2UjHE3jENzO2gF9wbjBO7vOJvaYT2mHVlp
+        sFDDjwVq9pZEjCGqCDLG7akwxkPY4JR7yWObhwTziyuwRCJQQ19KO+pxFzfP
+        R1CGHogjIV4VHCAvmnEdSZkBFZMwoZm2BKgFNPQAvSAxVc0sNvIZRLh4+b56
+        fkF49eU0EfddwaphLHxXAm0SewhvOyi4cjnNpTBpuA0GogHyCFT1gZWk3q0e
+        yMS2EePvFvZEqcyqyPpbAs/pDkipsjA1ptA3QUA1tl19GSnKhb0KdQ1fYi8M
+        Cnq03fgpByxS9pTJnQxK8Szki7gsxO49iD1XUljMraaCRdIy1naLuoUpKCgy
+        oUe30NacEzh1CjQzKZ4cToiOzIEYRNyc9O6zVpUK84aFtyszy8s6qHNN2+Qt
+        4cQ5doJ2ZPWh6VHJrINoBHUYtS6xzeGYEs8nTE/ab5syIVZLRQzdXYfKJmaS
+        lXHFpztha2UOVAr+dwn1HUIxZoFjsx1cJ3s5QeSSaPY8cmlafU3++pemfn2Q
+        lGMJqmNvxrfzsUIAGqoTY28asmhU5MUbmXWLby388NlTIcZeLi5CGglsW9kf
+        moeLrW3k8boh7faoHWaiJTYpCGnB8UhDuXM4OPe4ldRRcu0uo36mU0Y6VrwY
+        ZUIdfducKppHCpy8khEkG8TG05PsMyQeSxkvFo98to/t+QTbu4fGMa6revXq
+        wFmRTbMa6T5jLxBsFsOz9Y0iRbJPV/RrpIRbvWv7+J4UMLSKOd/bOZUAjE0Y
+        u618IS6bAy2GISqVdiyVgcFHmG46UU/lz02H4vq372MGr/U3wuFgA4BtWPmP
+        Yek+VioSM5/BMo49DBYzMuK79bwoDfhKox4hhAskWqV7Mti/KFBe0OypfvFv
+        gzFcn8Z0fO2znS6TGQW9bqviPq/ZagmSSbGrELxhtvQAj55Iz5PJ+vkq9UAY
+        9vDqTR9Wvz/AARthBq5XddXtAhcvFv728Q+yitYLgNkS5utkOaNsuVkvV5vV
+        VSewzdjoM04Uf/345Z7QZBVdLSBasWQxgyXFXnqO+1kMwoXk7QQCp325swe4
+        u//0+Jmw6ZzSTby5vr6OKirglKc4Ahn7b6T7IvG1pyrKLqL3vz893JFkuqGr
+        2YIl8Xx5tV7Om0z09lPk9OAMf5WpaFAdcRfdvkDDOwkN9iRsbnWWoRgr0dRP
+        iXrw3X95+Pzw6cs9Nu8xSEMGC1OVpc/V0T8KzmbheJ/0AN/SrZqu7iGw26C5
+        LL25G777BwAA//8DANMsoGFJFQAA
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:50 GMT
+  recorded_at: Fri, 02 Sep 2016 22:37:08 GMT
 recorded_with: VCR 3.0.3
diff --git a/spec/fixtures/cassettes/braintree/credit.yml b/spec/fixtures/cassettes/braintree/credit.yml
new file mode 100644
index 00000000000..8ac371ff039
--- /dev/null
+++ b/spec/fixtures/cassettes/braintree/credit.yml
@@ -0,0 +1,302 @@
+---
+http_interactions:
+- request:
+    method: post
+    uri: https://api.sandbox.braintreegateway.com/merchants/7rdg92j7bm7fk5h3/transactions
+    body:
+      encoding: UTF-8
+      string: |
+        <?xml version="1.0" encoding="UTF-8"?>
+        <transaction>
+          <amount type="integer">40</amount>
+          <payment-method-nonce>fake-paypal-future-nonce</payment-method-nonce>
+          <options>
+            <submit-for-settlement type="boolean">true</submit-for-settlement>
+          </options>
+          <type>sale</type>
+        </transaction>
+    headers:
+      Accept-Encoding:
+      - gzip
+      Accept:
+      - application/xml
+      User-Agent:
+      - Braintree Ruby Gem 2.66.0
+      X-Apiversion:
+      - '4'
+      Authorization:
+      - Basic bXdqa2t4d2NwMzJja2huZjphOTI5OGY0M2IzMGM2OTlkYjMwNzJjYzRhMDBmN2Y0OQ==
+      Content-Type:
+      - application/xml
+  response:
+    status:
+      code: 201
+      message: Created
+    headers:
+      Date:
+      - Fri, 02 Sep 2016 22:42:45 GMT
+      Content-Type:
+      - application/xml; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      X-Frame-Options:
+      - SAMEORIGIN
+      - SAMEORIGIN
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Content-Type-Options:
+      - nosniff
+      X-Authentication:
+      - basic_auth
+      X-User:
+      - 3v249hqtptsg744y
+      Vary:
+      - Accept-Encoding
+      Content-Encoding:
+      - gzip
+      Etag:
+      - W/"f3a1560798cb24a66ef4e5e73eea1972"
+      Cache-Control:
+      - max-age=0, private, must-revalidate
+      X-Request-Id:
+      - b4f790dd-b5cb-43b8-82a7-6e27632636e3
+      X-Runtime:
+      - '0.379835'
+      Strict-Transport-Security:
+      - max-age=31536000; includeSubDomains
+    body:
+      encoding: ASCII-8BIT
+      string: !binary |-
+        H4sIAGUAylcAA+xYS3PbNhC+51d4dIcpyZJlZWgmTuxm3PEhk8SH9uIBiaWI
+        mgRYAJSl/vou+KYJxu5M28lMO+ODtfvhsQ/sfkv/3SFLT/agNJficrY4nc9O
+        QESScbG7nN1/+4lczN4Fb3yjqNA0MogK3pyc+JwFSaz2TzuT+R7+sDJtqCl0
+        oMGYFJf7Xi2wOnPMIdA0Bd8r/7WyqFAKzzoSriXBIyG4/3rte2OxBdNMFsIE
+        q/npfO579S+ryEBFCRWG0CiyQoK30QayUKbG91za8q5FSBy6E8HTy5lRBcy8
+        aneKe6lXQaViiHQoIgXUACPUnFjbL2cMfxqewSxYzhfnZL4l8+W35fLtCv/W
+        v6IH2gXl+iJnf219t6D2szYSLbA/ytA9vyEKY660IYJm4FCmdFoXySyn4ujQ
+        QEZ56pA/Qai5ce2VJ1K45DE9jJzq9a3yQ57alPuXLdRGAWBOMKZAa5cLDgYE
+        s5GYhKQyoik3ru0V7PC5ufwk8WWl5dtw3hcTVB2nzanUdjWhaZ7Q5atQZy+h
+        RIHR4NE4Ur3goE1xIZjrlbQaXWc5VYoeB0p0ZK8OuTbJqTIcXVPWIMgAX+pw
+        hWtzWphEKv7Hy9v3tg2piRInJuF5/n8u/qC52I9OXRhJzCFlus6FvSaglFQE
+        fZRLocFpWonrmT5EB7fYob4LaLYYRs29y3cxpRn7/XjlWGihO+wLT/SImt+g
+        ynJsNXocWD9XMsLT0A/N66Al3OmMDjw8cTG3vXpKO7HSYKIGVzlq9sCcq0tE
+        6UHGuL0V+ngMG91yL3lk4xBjfHEFpkgIamxLYTs9nlK18wmUoQdScRCnCg6Q
+        5U23DqVMgYpZENNUW/7TAhp2gFaQiCpWZ7KRj+B6aiF3SctysXI9CNyR2Cs4
+        i0HOVRXRTAqTBL43Eo2QR6BqCCwl9Wl1Oya2iBh3rbA3SmRa+tVdEHhGd0AK
+        lQaJMbl+63lUY9HVp6GiXNiHUGfwKVZCL6dHW4sfMsAUZQ+p3EmvEI9CPonT
+        XOzegdhzJYXFXGoqWCgPSFbbI+oCpiCnyArvq4U24ypBpU6ApibBm0OH6Mkq
+        EIOQm05f/axVhcK4YdrtitSSsh7quaYt8ZZtYhfroD1ZfWl6VDLtIRpB7Uat
+        Cyxy2KTEY4cZSIdFU8bEaqmIoH/qWNn4TLIiKsl0z22trAIVgv9eQP2CUIxR
+        4FhqR4/JPk0QmSSaPU48mVZfU7/hk6kHD5JwTEF1HHT4tjuWCMCN6sDYd4YU
+        GhVZ/kpa3eLbHeoBpyMQ/ZmnREyNLZWHNNLXNrPfN1OLzW0k8bph7PaqPV6i
+        JZYoCGjO8UpjeWWwN7b4H3YCTlQZN5jHD7FUDx1T+i+7xDEJ/1guaCX126la
+        YErd7LcIdaR4PsmOe/q2ZZXUn+TIxiQjSECJ9aazuQ2QeC1lnFi88rNzLA8g
+        2PId1J5xXVYxpw6qXWTTwiZ60tRUii1kfLfhpkib7dcMtGuisLX6igokVAgY
+        74ox31vuEgNMsQ57rHwiVTRHWnRDWChdTS4MDA7muulPA5U7Nr2xx338EDP6
+        gPNKOBysA7A5K/c17AiImYpk3bVhEUWOqQYjMmG7tTwvDLhSoyYWhAsk30U1
+        RtqvVijPafpQfwTyvSnckNr2bB0y4NUzfjwJfHm/khN/lAIny2xImyfRJVlN
+        sMQQfG42DwHtiKVjprZGv8BNEYRNvvzkE5T/v4cDVsQUqrLVV7cLKtex4PPV
+        L4RdwNkG54X1Oo7oekOjzcV2vjrb9Hzc8IrhQILir1d3N2S7YTFdnm9jNqcR
+        Ywssq89xfxfFrBzyeoaJdLDY2Qtc33y4/0TOLhbbsy3drLdLVnLFStn5EcjU
+        p7P+wDoZhMqjN18ebq/JcnNON6vN+WK7Xl2sN/MmEoPzFOm+RwQ/y0Q0qJ64
+        j24/UATXEhpsJ2weeJqiGPPQ1JNm3QNv7m4/3X64u8E6PgVppoXclEnJgo9X
+        n7/df7lBi5D8deLm08TEJ6VnHbKrngH23cWwTfaU7pUTH6tfhjU50LascYlq
+        Xthgu+DNnwAAAP//AwC5j9scnBcAAA==
+    http_version: 
+  recorded_at: Fri, 02 Sep 2016 22:42:45 GMT
+- request:
+    method: put
+    uri: https://api.sandbox.braintreegateway.com/merchants/7rdg92j7bm7fk5h3/transactions/hfrvwgtm/settle
+    body:
+      encoding: UTF-8
+      string: ''
+    headers:
+      Accept-Encoding:
+      - gzip
+      Accept:
+      - application/xml
+      User-Agent:
+      - Braintree Ruby Gem 2.66.0
+      X-Apiversion:
+      - '4'
+      Authorization:
+      - Basic bXdqa2t4d2NwMzJja2huZjphOTI5OGY0M2IzMGM2OTlkYjMwNzJjYzRhMDBmN2Y0OQ==
+      Content-Type:
+      - application/xml
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Date:
+      - Fri, 02 Sep 2016 22:42:47 GMT
+      Content-Type:
+      - application/xml; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      X-Frame-Options:
+      - SAMEORIGIN
+      - SAMEORIGIN
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Content-Type-Options:
+      - nosniff
+      X-Authentication:
+      - basic_auth
+      X-User:
+      - 3v249hqtptsg744y
+      Vary:
+      - Accept-Encoding
+      Content-Encoding:
+      - gzip
+      Etag:
+      - W/"e3649378352bf711b686c7884dba68f5"
+      Cache-Control:
+      - max-age=0, private, must-revalidate
+      X-Request-Id:
+      - 4216fe7e-f24c-4898-8282-312772929373
+      X-Runtime:
+      - '1.692917'
+      Strict-Transport-Security:
+      - max-age=31536000; includeSubDomains
+    body:
+      encoding: ASCII-8BIT
+      string: !binary |-
+        H4sIAGcAylcAA+xYS3PbNhC+51d4dIcpyZZlZWQmTuxm3Mkhk8SH9qKBiKWI
+        GgRYAJSl/Pou+KYJxm6n7XTazugg7n5YYBf7xPrNIRUne9CGK3k1mZ1OJycg
+        I8W43F1N7r/+QC4nb8JXa6upNDSyiApfnZysOQuTWO8fdzZdB/jhaMZSm5vQ
+        gLUC2Dqovh3LHjMIDRWwDoq/jhblWuNWR8KNIrgjhPdfbtbBkOzANFW5tOH5
+        9HQ6XQfVl2OkoKOESktoFDkiwcMYC+lWCbsOfNziqPmWeHgnkouridU5TIJS
+        OkVZ+kVQpRkiPYxIA7XACLUnTverCcNPy1OYhPPp7IJMV2Q6/zqfvz7H3+Jn
+        tECzoFifZ+zl6y9wfbugsrOxCjVwH8XNPT0hEmOujSWSpuBhCjrOi1SaUXn0
+        cCClXHjoj7A13PpkZYmSPnpMDwOjBl2t1lsuBDrs36yhsRoAfYIxDcb4THCw
+        IJm7iVGIUBEV3PrEa9hhtPnspDCyRBEb3vOig+rjuDol260mVGQJnb8IdfYc
+        SuZ4Gzwa3lTnclCnOJfMFyUNx1ReTrWmxx4TDdlJQz4hGdWWo2nKFJQCRmp/
+        hU84zW2iNP/2vPiO2C21UeKySRuCmzrtbFaY+zzQQkTCs+x/V/2Humr3dqq8
+        SWIOgpnKVfaGgNZKE7RRpqQBr2oFrqN6Hx3eYQH7LqAW0b81v5TvYgo19vvh
+        yiHRQXdYNh7pETm/QBkEWInM8GLXmVYR7oZ2qIOHFnCvMVpwf8fZ1JXyMe7I
+        SouOGl5nyNm7FmMMUViQMe5OhTYewgan3CseuXuI8X5xBbrIFvRQl9w1ArhL
+        We1HUJYeSNmieFlwgDSri/lWKQFUTsKYCuPaowZQNw+oBYmoZpUnW/UAvlDb
+        ch+1SBfnvoBAicQdwZsMMq7LG02VtEm4DgakAfIIVPeBBaXararWxCUR688V
+        7kSJEoVd/QmBp3QHJNciTKzNzOsgoAYTrTndasqlC4TKg08xEwYZPbr8u0kB
+        XZRthNqpIJcPUj3K00zu3oDcc62kw1wZKtlWHbCVbbaoEpiGjGLuvi8XOo8r
+        CSU7ASpsgieHFtGhlSAGW25bfvlZsXKN94Zut8uF69k6qKecJsW7ZhSLXAvt
+        0KpD06NWooOoCZUZjckxyWFhkg8tpkftJ00VE8elMoLurkNmbTPF8qjotTtm
+        a2glKJf81xyqCEIy3gLHVDsIJheaIFNFDHsYCZmGX3WG/ZCpxhKScHRBfew1
+        AE11LBCAgqqLcXGGHTYy0uyFXXuDbyRU80/bX3RHogIxNtWUFjLY3Tae/bbu
+        LpxvY49v6obeHbXTthiFKQpCmnE80pBeKhwMNf6LjYADV8ot+vEmVnrTdkf/
+        ZZM4I2DE/btNcPGsCf5IXAyzhF/h36NtQ6kyRVnwBfWPAvnWRJpno6NCh98U
+        6GIOIhn2nooRbLeJM5y3lPeQeCxtvVg88pN9XNdDsMHxzDmMmyJne3lQSlF1
+        wR6pwGMjOhbM4dn6QnFIcE87qNdIGm/4ZeOTUClhKBUvf+86tRhgrMdy26pH
+        Ut7mgItm2ObalLMZA0u5MHU17rH8d9MZ7Pzb9zGD16wXwuHgDICtiPYfw83D
+        6Kk4mvgE5lHkmeHwRkZ0d5pnuQWfa1RtFOESR428nKndEx7SMyo21YvYOhjD
+        9Rv5jq79fv/8yTQwCnxeXjEBvFcS5+i0PySMoovWPMGESjDcnB8C6hErzwOD
+        U/qZThxB2NIU719h8f8tHDD5CSiTdJfdLChNx8JP1z8RdglnS5yOFos4oosl
+        jZaXq+n52bJj47qL6o9fSP5y/fGWrJYspvOLVcymNGJshin0Ke7PaqhLg7y8
+        n8bmN9+5A9zcvrv/QM4uZ6uzFV0uVnNWdMYls7UjkLF3xO54PnoJpUVvP2/u
+        bsh8eUGX58uL2WpxfrlYTuub6O2nSfv6Ev6oElmjOuQuunmOCW8U1NiWWAe4
+        EEhGP7TVXF3Vu9uPdx/u3n28de9FI5B6Nsps4ZQsfH/96ev951vUCFvdllw/
+        xIy8rz0pj232DLHGzvplssP0rxx5uX8eVvtAU7KGKaqOsJ648NVvAAAA//8D
+        AFgau56oGAAA
+    http_version: 
+  recorded_at: Fri, 02 Sep 2016 22:42:47 GMT
+- request:
+    method: post
+    uri: https://api.sandbox.braintreegateway.com/merchants/7rdg92j7bm7fk5h3/transactions/hfrvwgtm/refund
+    body:
+      encoding: UTF-8
+      string: |
+        <?xml version="1.0" encoding="UTF-8"?>
+        <transaction>
+          <amount type="integer">20</amount>
+        </transaction>
+    headers:
+      Accept-Encoding:
+      - gzip
+      Accept:
+      - application/xml
+      User-Agent:
+      - Braintree Ruby Gem 2.66.0
+      X-Apiversion:
+      - '4'
+      Authorization:
+      - Basic bXdqa2t4d2NwMzJja2huZjphOTI5OGY0M2IzMGM2OTlkYjMwNzJjYzRhMDBmN2Y0OQ==
+      Content-Type:
+      - application/xml
+  response:
+    status:
+      code: 201
+      message: Created
+    headers:
+      Date:
+      - Fri, 02 Sep 2016 22:42:47 GMT
+      Content-Type:
+      - application/xml; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      X-Frame-Options:
+      - SAMEORIGIN
+      - SAMEORIGIN
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Content-Type-Options:
+      - nosniff
+      X-Authentication:
+      - basic_auth
+      X-User:
+      - 3v249hqtptsg744y
+      Vary:
+      - Accept-Encoding
+      Content-Encoding:
+      - gzip
+      Etag:
+      - W/"1c5337e012846cb439b5755f7a2b55e0"
+      Cache-Control:
+      - max-age=0, private, must-revalidate
+      X-Request-Id:
+      - 5163c0e9-aca2-435c-992e-765e44877f92
+      X-Runtime:
+      - '0.309892'
+      Strict-Transport-Security:
+      - max-age=31536000; includeSubDomains
+    body:
+      encoding: ASCII-8BIT
+      string: !binary |-
+        H4sIAGcAylcAA+xYS2/bRhC++1cYuq8py3JkBzTzshOkCAojjQ/txVhyR+LW
+        5C67D1nqr+/s8iEyXCYqihY5FPDBmvn2MbPz+Ibxq11ZnG5BaS7Fzez8bD47
+        BZFJxsXmZvbw5T25mr1KTmKjqNA0M4hKTk5PY86SpdCm2qXLOMIfTqYNNVYn
+        GowpcHkcNQKnM/sKkkwB4yaO/A8nzaxSeNqecC0JHgrJwy+3cTQWOzAtpRUm
+        WczP5vM4an45RQkqy6kwhGaZExK8jzZQprLAw0Jaf1ubkoDuVPDiZmaUhVlU
+        705xL3UUVCqGyIACDacGGKHm1Nl+M2P40/ASZmjO+QsyvybzxZfF4uUS/1a/
+        oQe6BX69rdjfW39Y0PhZG4kWuB/+8b6+IQrXXGlDBC0hoCzotC6TZUXFPqCB
+        kvIiIH+GVHMT2qvKpQjJ13Q3cmrUtypOeeGC7j+2UBsFgDHBmAKtQy7YGRDM
+        vcQkpJAZLbgJba9ggwkX8pPE3Cp8bgTviwGq9tPm1Gq3mtCiyuniKNTF91DC
+        4mvwbPxSvcdBm9ZWsFCWdBrdRDlViu4HSnRkrxK5VM7Xavu8MWUcTSHc6ooq
+        w9FhvjZBCZi/Q1ToSGpNLhX/c7Tl6Oa9bVNqsjyIyXlV/R+hP2iE9l+nKZdk
+        zaFguomFrSaglFQEfVRJoSFomsf1TB+ikzfYt74JaLcYvlp4l29ivBnb7Xjl
+        WOigG+wWz3SPmt+hjnJsQHr8sHGlZIanoR/a7KAeHnTGATw88Xw+X8TRlHZi
+        pcFATe5rObDgcg/xLmTIM/Ba6OQxbHTNreSZe4g1PjCuwBhJQY2NsY4A4Cl1
+        l59AGbojNTUJqmAHZdU28VTKAqiYJWtaaEBa1AFa0oBWkIwq1oSykU8QyrWU
+        h6S+XixDGYE7EneFYDWouKqftJTC5EkcjUQj5B6oGgK9pDmt6dLEVRETLhbu
+        RrksvF/DFYGXdAPEqiLJjan0yyiiGAZGn6WKcuEyoQnhMyyFUUX3rhg/loAx
+        yh4LuZGRFU9CPouzSmxegdhyJYXD3GgqWCp3yGK7I5oKpqCi2D8e6oUu4mpB
+        rc6BFibHm8MB0ZPVIAYpNwd9/bNRWYXvhmG3sYXjaj3U15quxjsSim3sAO3J
+        mkvTvZJFD9EKGjdqbbHKYZcSTwfMQDqsmnJNnJaKDPqnjpWtzySzmefYPbd1
+        shpkBf/DQpNBKMZX4FhrR8nkUhNEKYlmTxMp0+kbRjhMmWYiITnHEFT7QYvv
+        2qNHAG7UPIzLM2TWqCirI9l2h+92aEchm5bc4BM+rqV6PLCE/mjk8VOzTe0v
+        jRy3i/PX7WjjIh2Zvm5pvbt4j6ZoiQULElpxvOBYXpsfje3/t10SmA5/LBd0
+        kiZs6upf0DDzs6nOFK8mmWFP31VrT4ZJhUxEMoLkizhvBuv6AInXUiaIxSt/
+        dY5rgQS7XYDWMq59Agd1UO8i2+o9UY6n5jSsnuO7DTdFyujme7RrPCbjgC1g
+        vAO+79a16DXAVHN1R8hnUr/cSIsmp1bpmqEzMDiW6rYMD1Thd+jR+/DxQ8zo
+        88WRcNg5B2APUuFruPEGoxJJaWhDm2UB9o7en7DdWV5ZA6EwaPon4QJJpq3H
+        JffNBuUVLR6bTyBxNIUbUrierUOmt5y7VD8C+P39PPV7JwVOUOWQHU6iPSfL
+        sZwQTC0Xk4B2rOWY+Hmjv0PBEIS9zH/wSPz/r2GH1a+AukT11d2C2nUsuX/z
+        K2FXcLFCXnx5uc7o5Ypmq6vr+fJi1fNx2z6HxDs4R/5ztlQbfTxZQmZjN+6O
+        t3dvHz6Qi6vz64trurq8XjBPe2rlwVdApj4O9YevSUfXXrv7/PjxlixWL+hq
+        uXpxfn25vLpczVtvD85T5DBbJz/JXLSonriP7obt5FZCiz0I2yQuChRjrJlm
+        amp62t2njx8+vv10h3V5CtIS38r4wGPJuzf3Xx4+36FFyGMO4nbMbj6NJJ/v
+        3j/8fOtRB+HJqPVNl8oA8JiC1RbxAIGPozZFBm02OfkLAAD//wMAyqX9QF0W
+        AAA=
+    http_version: 
+  recorded_at: Fri, 02 Sep 2016 22:42:47 GMT
+recorded_with: VCR 3.0.3
diff --git a/spec/fixtures/cassettes/braintree/payment.yml b/spec/fixtures/cassettes/braintree/payment.yml
index e5fb5f47293..3d2397f741d 100644
--- a/spec/fixtures/cassettes/braintree/payment.yml
+++ b/spec/fixtures/cassettes/braintree/payment.yml
@@ -35,7 +35,7 @@ http_interactions:
       message: Created
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:10 GMT
+      - Fri, 02 Sep 2016 22:36:03 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -56,54 +56,54 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"550fbc6fe40cfa602d6b2104f9465dec"
+      - W/"1fca2063410b600590b2ad423e4ed3c9"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - 849aab8d-5be2-43c8-b7a9-9959b01fa584
+      - f311b38c-7db3-4213-b2b8-cf0c0dc98643
       X-Runtime:
-      - '0.510242'
+      - '0.430471'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAP74yVcAA+xYS3PbNhC++1d4dIdJybYkZ2g6Tuxm3PEhk8SH9uIByaWI
-        mgRYAJSl/vouCJIiTTB2Z9KZzLQ3affDYx/Y/ZbB1a7Ij7cgFRP8cjY/8WfH
-        wGORML65nD18+4WsZ1fhUaAl5YrGGlHh0fFxwJIwejrdcDiVgYd/jExpqisV
-        KtA6x+WB1wiMTu9LCBXNIfDqn0YWV1LiWXvClCB4JIQPX28Cbyw2YFqIiuvw
-        /Nz3T3w/8Jr/RlWAjDPKNaFxbIQE76M0FJHIdeC5tPVtq4g4dMec5ZczLSuY
-        eXZ3invJN0GFTBDpUMQSqIaEUH1srL+cJfhXswJm4cKfL4l/QfzFt8Xi3Xz+
-        bu7/jj7oFtTrqzL5Z+sPCxpPKy3QAvPHBm+x8P35xdxvg4fSlEmlCacFvLw/
-        KnM6rYtFUVK+d2igoCx3yJ8hUky79iozwV3ylO5GXvX6ZgURy03WdSa6Nvnx
-        FiotATApkkSCUi4X7DTwxIRiEpKLmOZMu7aXsMEX5/KTwMeV18/DeV/MULmf
-        NseqzWpC8zKjizehTl9D8QqjweJxpHrBQZvSiieuZ9JpVJPmVEq6HyjRkb1S
-        5NqkpFIzdE1dhqAAfKrDFa7NaaUzIdlfr2/f2zaiOs6cmIyV5f+5+JPmYj86
-        TWUkKYM8UU0ubBUBKYUk6KNScAVO02pcz/QhOrzDFvVdQLvFMGruXb6Lqc3Y
-        bscrx0ID3WBjeKZ71PwBNsux16hxYINSihhPQz+0r4PWcKczDuDhiXPfNOsp
-        7cRKjYkaXpeo2ULiXF0jag8mCTO3Qh+PYaNbbgWLTRxSjC+uwBSJQI5tqUyr
-        x1NsP59AabojloQ4VbCDomzbdSREDpTPwpTmylCgDtDSA7SCxFS2vViLJ+Dh
-        5jzaFsij7D+riZjrCdYF48z1JHBPYi7hLAclkzamheA6CwNvJBoh90DlEFhL
-        mtOahkxMGdHuamFulIm89qy7JLCCboBUMg8zrUv1zvOowrKrTiJJGTdPocnh
-        E6yFXkn3pho/FoBJmjzmYiO8ij9x8cxPSr65Ar5lUnCDuVSUJ5HYIenpjmhK
-        mISSIhN6sAtNzlmBVWdAc53hzeGA6MksKIGI6YPe/m1UlcS4YeJtqtzwsh7q
-        paYr8oZwYh87QHuy5tJ0L0XeQ7SCxo1KVVjmsE3xpwNmIB2WTZESo6U8hv6p
-        Y2XrM5FUcc2ne27rZBZUcfZnBc0bQjFGgWGxHT0n8ziBF4Ko5Gni0XT6hvwN
-        H00zfZCMYQrK/aDHd/2xRgBu1ATGvDRk0agoyjcy6w7f7dBMOQcK0R98asT0
-        7GJ9pJDCdrn9vh1dTHYjk1ctbTeX7XETJbBMQUhLhpcay63J3tjmf9kNOFYV
-        TGMmP6ZCPh7Y0n/bKY6R+GdzQidpXpBthTl1s+AqUrFk5SRL7um7xlWPAKRE
-        ViYSgkSUGH86CsELJF5LaicWr/ziHMMHCLZ+B8VPmKprmVMHdhfRNrKJzjQ1
-        nWIjGd9tuCnSZ/NhA+2aKG+d3lKCjHIO410x5lvDYVKAKfZhjhXPxEZzpEU3
-        RJVUdoJJQOOArtouNVC5Y9Mbf9zHDzGjbzlvhMPOOABbtHRfw4yCmKlI2l0b
-        VnHsmG4wIhO2G8vLSoMrNRp6QRhHEl7ZcdJ8wEJ5SfPH5mtQ4E3hhhS3Z+uQ
-        CZ+94MmTwNf3q7nxR8FxwiyG9HkSXZPWDEsMwedm8hDQjlQ4Zmtj9KscFWHY
-        7OuPP2H9+z3ssCrmYAtXX90tsM5Lws/Xv5F44Z+frf3VxXpJ08XqPKGrZUwv
-        lj0vt/xiOJqg+Ov1/S1ZwersdEHj5Tk9S9NTXDjC/SiqaV3ydqaJtLDamAvc
-        3H54+ESi2F+mlK79M7qsOaNVHvwIZOojWn90ddWq2svWo7dfHu9uyBqWa3+d
-        rhb+hb9MolUbicF5khy+TIS/ioy3qJ64j+4+VYQ3AlrsQdg+8TxHMWaibmbO
-        pg/e3t99uvtwf4uVfArSTg2lrtMyCT9ef/728OUWLUISeBC3HykmPi696JGH
-        +hli550PG2VP6V458eX6dVibA13TGhep9o0NtguP/gYAAP//AwDNNPeyqRcA
-        AA==
+        H4sIANP+yVcAA+xYS2/bOBC+91cEvjOSn4kLR23aZIsseija5rB7CShpZHEj
+        kSpJOXZ//Q5FSZYsqskCXaDA7s2e+fiYB2e+0ebNPs/OdiAVE/xqMj33J2fA
+        IxEzvr2a3H/9jVxO3gSvNlpSrmikERW8OjvbsDi4+PY9PCxns42Hf4xMaapL
+        FSjQOsPlG68WGJ0+FBAomsHGq34aWVRKiWcdCFOC4JEQ3H+52XhDsQHTXJRc
+        B8ul75/7/sar/xtVDjJKKdeERpEREryP0pCHItMbz6WtbluGxKE74yy7mmhZ
+        wsSzu1PcS74IKmSMSIcikkA1xITqM2P91STGv5rlMAlm/nRF/DXxZ19ns9fz
+        1Wt//if6oF1QrS+L+J+tPy6oPa20QAvMHxu86WK5WK8uLprgoTRhUmnCaQ6n
+        90dlRsd1kcgLyg8ODeSUZQ75E4SKaddeRSq4S57Q/cCrXtesTcgyk3Wtia5N
+        fr6FSksATIo4lqCUywV7DTw2oRiFZCKiGdOu7SVs8cW5/CTwcWXV83DeFzNU
+        HsbNsWqzmtCsSOnsRaj5cyheYjRYNIxUJzhoU1Ly2PVMWo2q05xKSQ89JTqy
+        U4pcmxRUaoauqcoQ5IBPtb/CtTktdSok+/789p1tQ6qj1IlJWVH8n4u/aC52
+        o1NXRpIwyGJV58JOEZBSSII+KgRX4DStwnVM76ODO2xRPwQ0W/Sj5t7lh5jK
+        jN1uuHIoNNAtNoYnekDNX2CzHHuNGgZ2U0gR4Wnoh+Z10ArudMYR3D9x6ptm
+        PaYdWakxUYPrAjU7iJ2rK0TlwThm5lbo4yFscMudYJGJQ4LxxRWYIiHIoS2l
+        afV4iu3nIyhN98SSEKcK9pAXTbsOhciA8kmQ0EwZCtQCGnqAVpCIyqYXa/EI
+        PFiv4l3yhPDqn9WEzPUEq4KxcD0J3JOYSzjLQcGkjWkuuE6DjTcQDZAHoLIP
+        rCT1aXVDJqaMaHe1MDdKRVZ51l0SWE63QEqZBanWhXrteVRh2VXnoaSMm6dQ
+        5/A51kKvoAdTjR9ywCSNHzKxFV7JH7l44ucF374BvmNScIO5UpTHodgj6WmP
+        qEuYhIIiE7q3C03OWYFVp0AzneLN4YjoyCwohpDpo97+rVWlxLhh4m3LzPCy
+        DupU0xZ5Qzixjx2hHVl9aXqQIusgGkHtRqVKLHPYpvjjEdOT9sumSIjRUh5B
+        99ShsvGZiMuo4tMdt7UyCyo5+1ZC/YZQjFFgWGwHz8k8TuC5ICp+HHk0rb4m
+        f/1HU08fJGWYgvLQ6/Ftf6wQgBvVgTEvDVk0KvLihcy6xbc71FPOkUJ0B58K
+        MT67WB8ppLBtbr9tRheT3cjkVUPbzWU73EQJLFMQ0ILhpYZya7I3tPlfdgOO
+        VTnTmMkPiZAPR7b033aKYyT+1ZzQSuoXZFthRt0suAxVJFkxypI7+rZxVSMA
+        KZCViZggESXGn45CcILEa0ntxOKVT84xfIBg63dQ/JipqpY5dWB3EU0jG+lM
+        Y9MpNpLh3fqbIn02HzbQrpHy1uotJUgp5zDcFWO+MxwmARhjH+ZY8URsNAda
+        dENYSmUnmBg0Duiq6VI9lTs2nfHHfXwfM/iW80I47I0DsEVL9zXMKIiZiqTd
+        tWEZRY7pBiMyYruxvCg1uFKjpheEcSThpR0nzQcslBc0e6i/Bm28MVyf4nZs
+        7TPhxQlPHgU+v1/Fjd8LjhNm3qfPo+iKtKZYYgg+N5OHgHYkwjFbG6Of5agI
+        w2ZfffwJqt9vYY9VMQNbuLrqdoF1Xhx8uv6DLNeLJY0uljP/YnYxny0u5uv1
+        ZTj3O15u+EV/NEHxl+uPt8SPFtPlPPHjZJXMo/UaC+sp7mdRTeuSlzNNpIXl
+        1lzg5vbd/Qfi+7CMkssVLC+XFWe0yqMfgYx9ROuOrq5aVXnZevT288PdDVlE
+        8WwVLhJYzabh5XzVRKJ3niTHLxPB7yLlDaoj7qLbTxXBjYAGexQ2TzzLUIyZ
+        qOuZs+6Dtx/vPty9+3iLlXwM0kwNha7SMg7eX3/6ev/5Fi1CEngUNx8pRj4u
+        nfTIY/0MsPNO+42yo3SvHPly/TysyYG2aQ2LVPPGetsFr/4GAAD//wMA6r76
+        k6kXAAA=
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:49 GMT
+  recorded_at: Fri, 02 Sep 2016 22:36:03 GMT
 recorded_with: VCR 3.0.3
diff --git a/spec/fixtures/cassettes/braintree/purchase.yml b/spec/fixtures/cassettes/braintree/purchase.yml
index 8dc14152890..9492cc039d8 100644
--- a/spec/fixtures/cassettes/braintree/purchase.yml
+++ b/spec/fixtures/cassettes/braintree/purchase.yml
@@ -35,7 +35,7 @@ http_interactions:
       message: Created
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:09 GMT
+      - Fri, 02 Sep 2016 22:36:05 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -56,54 +56,54 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"c08f682cf483be66d923408916993638"
+      - W/"5818840e848777fb85174c5d4be0db9f"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - 5f23169e-faf0-4b4c-9496-4846a968097a
+      - 4afef4aa-3a2b-4605-8d99-f2220a0e86c0
       X-Runtime:
-      - '0.647860'
+      - '0.530645'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAP34yVcAA+xYS2/bOBC+91cEvjOyHMdJCkdp2mSLLHoo2uSwewkocWyx
-        kUiVpBy7v36HoiRLFtXk0AUK7N7smY+PeXDmGy2vtnl2tAGluRSXk/B4OjkC
-        kUjGxfpy8nD/BzmfXEVvlkZRoWliEBW9OTpachY9PdFtsruAZYB/rEwbakod
-        aTAmw+XLoBZYndkVEGmaIbr6aWVJqRSetSNcS4JHQvTw9WYZDMUWTHNZChOF
-        0+PpdBnU/6wiB5WkVBhCk8QKCd5GG8hjmZll4NNWdy1j4tEdCZ5dTowqYRK4
-        3SnupV4FlYoh0qNIFFADjFBzZG2/nDD8a3gOk2g2DRdkekGms/vZ7G0Yvp2e
-        /40eaBdU68uCvX79Ba7fL6j9rI1EC+wfF7owXJxenE7PmtChdMWVNkTQHA7v
-        j8qMjusSmRdU7DwayCnPPPJniDU3vr2KVAqffEW3A68GXbOWMc9szrUm+jb5
-        9RZqowAwKRhToLXPBVsDgtlQjEIymdCMG9/2Ctb43nx+kvi0supxeO+LGap2
-        4+Y4tV1NaFakdPYq1MlLKFFiNHgyjFQnOGjTqhTM90xaja7TnCpFdz0lOrJT
-        iHybFFQZjq6pihDkgE+1v8K3OS1NKhX/8fL2nW1japLUi0l5Ufyfi79pLnaj
-        U1dGsuKQMV3nwkYTUEoqgj4qpNDgNa3CdUzvo6M7bFE/BTRb9KPm3+WnmMqM
-        zWa4cii00DU2hme6Q803cFmOvUYPA7sslEzwNPRD8zpoBfc6Yw/unxhObbMe
-        046sNJio0XWBmg0w7+oKUXmQMW5vhT4ewga33Eie2DisML64AlMkBjW0pbSt
-        Hk9x/XwEZeiWOBLiVcEW8qJp17GUGVAxiVY005YAtYCGHqAVJKGq6cVGPoGI
-        FvHu+7cFwqt/ThNz3xOsCsbc9yRwT2Iv4S0HBVcuprkUJo2WwUA0QO6Aqj6w
-        ktSn1Q2Z2DJi/NXC3iiVWeVZf0ngOV0DKVUWpcYU+m0QUI1lVx/HinJhn0Kd
-        w8dYC4OC7mw1fswBk5Q9ZnItg1I8CfksjguxvgKx4UoKi7nUVLBYbpH0tEfU
-        JUxBQZEJPbiFNuecwKlToJlJ8eawR3RkDsQg5mavd39rVakwbph46zKzvKyD
-        OtS0Rd4STuxje2hHVl+a7pTMOohGULtR6xLLHLYp8bTH9KT9silXxGqpSKB7
-        6lDZ+EyyMqn4dMdtrcyBSsG/l1C/IRRjFDgW28Fzso8TRC6JZk8jj6bV1+Sv
-        /2jq2YOkHFNQ7Xo9vu2PFQJwozow9qUhi0ZFXrySmbf4dod6xtlTiO7YUyHG
-        JhfnIY0Ets3sd83gYnMbebxuSLu9aoeZaIlFCiJacLzSUO4MDoYW/8tOwKEq
-        5wbz+HEl1eOeK/2XXeIZhn8vF7SS+u24JphRP/8tY50oXozy446+bVkV+ScF
-        8jHJCFJQYr3pKQEHSLyWMl4sXvngHMsECDZ9D7lnXFdVzKsDt4tsWthITxqb
-        S7GFDO/W3xSJs/2ggXaNFLZW78hASoWA4a4Y841lLyuAMd5hj5XPxEVzoEU3
-        xKXSbnZhYHA0101/6qn8sekMPv7j+5jBN5xXwmFrHYDNWfmvYYdAzFSk674N
-        yyTxzDUYkRHbreVFacCXGjWxIFwg/S7dIGk/XKG8oNlj/R1oGYzh+uS2Y2uf
-        A88PGPIo8OX9Klb8QQqcLfM+cR5FV3Q1xRJD8LnZPAS0YyU9U7U1+kV2ijBs
-        89Vnn6j6/Q62WBMzcIWrq24XOOex6PP1X2SxYKuTWQL0ZLaan8fnAGencbyI
-        O15umEV/KEHx1+tPt2QRhjFlZ3E4j+MkZjMsrIe4X0UynUtezzGREJZre4Gb
-        2/cPH8l8PmPxdDUPFwlUbNEp934EMvb5rDu0+mpV5WXn0dsvj3c35HTKzuAk
-        nIfnLGHni7MmEr3zFNl/k4j+lKloUB1xF91+pIhuJDTYvbB54lmGYsxEU0+b
-        dRe8/XT38e79p1us5GOQZl4oTJWWLPpw/fn+4cstWoT0by9uPk+MfFY66JH7
-        +hlh5w37jbKj9K8c+WL9MqzJgbZpDYtU88Z620Vv/gEAAP//AwBLfxyBoRcA
-        AA==
+        H4sIANX+yVcAA+xYS2/bOBC+91cEvjOSn40LR23aZIsseija5rB7CShpZLGR
+        SJWkHLu/vkNRkiWLarJAFyiwe7NnPj7mwZlvtHm9z7OzHUjFBL+cTM/9yRnw
+        SMSMby8nd1/+IBeT18GLjZaUKxppRAUvzs42LA7m33b8a/T95cbDP0amNNWl
+        ChRoneHyjVcLjE4fCggUzWDjVT+NLCqlxLMOhClB8EgI7j5fb7yh2IBpLkqu
+        g6l/7vsbr/5nFDnIKKVcExpFRkjwNkpDHopMbzyXtrprGRKH7oyz7HKiZQkT
+        z+5OcS/5LKiQMSIdikgC1RATqs+M7ZeTGP9qlsMkmPnTFfHXxJ99mc1ezVev
+        /OXf6IF2QbW+LOJ/tv64oPaz0gItMH9s6JYvF+vZ3F82oUNpwqTShNMcTu+P
+        yoyO6yKRF5QfHBrIKcsc8kcIFdOuvYpUcJc8ofuBV72uWZuQZSbnWhNdm/x6
+        C5WWAJgUcSxBKZcL9hp4bEIxCslERDOmXdtL2OJ7c/lJ4NPKqsfhvC9mqDyM
+        m2PVZjWhWZHS2bNQ86dQvMRosGgYqU5w0Kak5LHrmbQaVac5lZIeekp0ZKcQ
+        uTYpqNQMXVMVIcgBn2p/hWtzWupUSPb96e0724ZUR6kTk7Ki+D8Xf9Nc7Ean
+        rowkYZDFqs6FnSIgpZAEfVQIrsBpWoXrmN5HB7fYon4KaLboR829y08xlRm7
+        3XDlUGigW2wMj/SAmq9gsxx7jRoGdlNIEeFp6IfmddAK7nTGEdw/ceqbZj2m
+        HVmpMVGDqwI1O4idqytE5cE4ZuZW6OMhbHDLnWCRiUOC8cUVmCIhyKEtpWn1
+        eIrt5yMoTffEkhCnCvaQF027DoXIgPJJkNBMGQLUAhp6gFaQiMqmF2vxADxY
+        rPfpI7Io+89qQuZ6glXBWLieBO5JzCWc5aBg0sY0F1ynwcYbiAbIA1DZB1aS
+        +rS6IRNTRrS7WpgbpSKrPOsuCSynWyClzIJU60K98jyqsOyq81BSxs1TqHP4
+        HGuhV9CDqcb3OWCSxveZ2Aqv5A9cPPLzgm9fA98xKbjBXCrK41DskfS0R9Ql
+        TEJBkQnd2YUm56zAqlOgmU7x5nBEdGQWFEPI9FFv/9aqUmLcMPG2ZWZ4WQd1
+        qmmLvCGc2MeO0I6svjQ9SJF1EI2gdqNSJZY5bFP84YjpSftlUyTEaCmPoHvq
+        UNn4TMRlVPHpjttamQWVnH0roX5DKMYoMCy2g+dkHifwXBAVP4w8mlZfk7/+
+        o6lnD5IyTEF56PX4tj9WCMCN6sCYl4YsGhV58Uxm3eLbHeoZ50ghumNPhRib
+        XKyHFBLYNrPfNIOLyW3k8aoh7eaqHWaiBBYpCGjB8EpDuTXYG1r8LzsBh6qc
+        aczj+0TI+yNX+i+7xDEM/14uaCX127FNMKNu/luGKpKsGOXHHX3bsiryTwrk
+        YyImSEGJ8aajBJwg8VpSO7F45ZNzDBMg2PQd5D5mqqpiTh3YXUTTwkZ60thc
+        ii1keLf+pkiczQcNtGuksLV6SwZSyjkMd8WY7wx7SQDGeIc5VjwSG82BFt0Q
+        llLZ2SUGjaO5avpTT+WOTWfwcR/fxwy+4TwTDnvjAGzO0n0NMwRipiJdd21Y
+        RpFjrsGIjNhuLC9KDa7UqIkFYRzpd2kHSfPhCuUFze7r70AbbwzXJ7cdW/sc
+        eHHCkEeBT+9XseJ3guNsmfeJ8yi6oqsplhiCz83kIaAdiXBM1cboJ9kpwrDN
+        V599gur3G9hjTczAFq6uul1gnRcHH6/+IvM50GWSXNCVf7FeQrSeLRbrFYQd
+        LzfMoj+UoPjz1Ycbsl6uVvPZbBWu6SJcJmssrKe4X0UyrUuezzGREJZbc4Hr
+        m7d37wldXMwuomgd08WyYotWefQjkLHPZ92h1VWrKi9bj958ur+9JtOLuT+f
+        XfhLP5rGyZI2keidJ8nxm0Twp0h5g+qIu+j2I0VwLaDBHoXNE88yFGMm6nra
+        rLvgzYfb97dvP9xgJR+DNPNCoau0jIN3Vx+/3H26QYuQ/h3FzeeJkc9KJz3y
+        WD8D7LzTfqPsKN0rR75YPw1rcqBtWsMi1byx3nbBix8AAAD//wMA7brPu6EX
+        AAA=
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:47 GMT
+  recorded_at: Fri, 02 Sep 2016 22:36:05 GMT
 recorded_with: VCR 3.0.3
diff --git a/spec/fixtures/cassettes/braintree/token.yml b/spec/fixtures/cassettes/braintree/token.yml
index a459ab0df7e..fac358cee2a 100644
--- a/spec/fixtures/cassettes/braintree/token.yml
+++ b/spec/fixtures/cassettes/braintree/token.yml
@@ -29,7 +29,7 @@ http_interactions:
       message: Created
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:12 GMT
+      - Fri, 02 Sep 2016 22:36:39 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -50,44 +50,44 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"6ff04291f2858d2ed634b0547b758c62"
+      - W/"a661b1df8f38f1c21497066d7437316c"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - f2d9bac0-5dea-4f1e-bec4-f7cbe94a4cf2
+      - 2b984fd3-c8cb-42de-8e0c-1a4b1e850a2c
       X-Runtime:
-      - '0.134842'
+      - '0.086035'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAAD5yVcAA6RV246bSBB9z1eM5j0bLkM2SDOJYnvAIAMxxg3db9DtCZdu
-        sILN7etTjZO5SN4o0j4gJKiuOnXOqer7L4PgN93hR1s09cOt+o9ye3OoacOK
-        +vvD7T6y3n+6/fL53T3lxaE+vT811aH+/O7m5r5L+fnw+TC6GkncKY3Ns1M2
-        42bp5iwJm0x3jwdhKfJ7KPiZaGika/eY1dsiKBzVsx/vAtvRg4gV3iovyAob
-        ZGUJHNEhWD2quKQDjhD3p23vxY4RrL5PWAsLf6qmwLZKHLvCi/Z6YOPBW303
-        fNtTnmx/JLGlkDh8wsnW9Mqvg18ofbBTeo9vR69sBi+Cp7jT/HKv+lFleKv9
-        D2/1tfesQYX36AuVU+E3ODaUROPVt4iNxKaGJxodC0UnolXTlU9ZBGdK0rPY
-        bdPYf0o1ZHyLVT0Vpx+HNSvpyhuxdmoygQvgpMw0Q6QxQ1T00L/bsHXY06np
-        NprVpztjgnoVFubdRrgjjvmZrV1OYpYzG+k4qc5YM09BuVW80TwB32VqWxDj
-        db7uVmSqxrRkRRYxkU6ogZgysznPasnD4rjR8bDR/C4T5Eh0NOIkPGba3YwL
-        8rSZjaQ+k1Mes2TXFyQ2tDRxIV7lF73cZ3xO0RdYG44Qo2whN0rcFnQv0nWo
-        0LX3cTOaObWrM9WsM7Hd7rA0Cios0D0EbVANtTnTLGMjAE/UKP7K67IYMGl5
-        DjHTZrrGt9f9rpnMfDmtI6yJakihKhqzpfPREbnC1ospKD51OPEnkkCuP3A5
-        95EgJbWunYfvS0ODeqds/Dtt5nyxkWdrDp73JZf/OvWV3L/62MTWGceDwWxe
-        0r+s8R/cFE+gGbNzye/jXkMlS1weAhYsBk6gPuRSCcRQ2zLgaf/0b8YtwiPV
-        Fy1OeIBjlUt993rIsxg8sd5e/HzxlytzZDVqsyXkgPlmwioP6HXfX6Un+MG2
-        TtQe+Kz7zuzpEjSsEejkLogue5VeC9/Mh+SLJOCLZNGSnQEzpHTMNqeZa9Cf
-        oP+j/SXuin9hJlCZaqbKlkYPHPQ47p/PEZsDz76yfVX/d/+gZ5vpzJHYgUeF
-        1ogDV9AXOVJhnsHnZ/ZodJFACtPMMR1f+L8ycx0RBHaLwWVdBv8Br9xt/vP8
-        Q20irJZqe5iHV/3ufTgna/FK9pbF1gT9j7+9541yfmAX28MxE+w1/9M1b7ya
-        zwWGPQJYlF182QuQ9wS+bZnUU/gqraFf4Ru7xO+2mlmRHejDURQuXfOyB/l5
-        1m6PwP9uS2QeQWBufMnVy277hf36fpPeIVBH7eb+NCIumi562GVb0LkI6rag
-        epiztdxrkgPQde77gp/WfJVp4exthLzZ0zA3oK1RHvZ+R+y97A/tldnvb3BJ
-        DtMYdmniyJiXf0ujIgk+49rNU1lDgP61D5qpgHFQNoJ3EifVUU9tcwTuqmcv
-        6F4R8LZggk943m9qDvjlXZRTMWPIQYc7h6vm0/bh4f7D5f59d//h7c38EwAA
-        //8DAO44f5jQBwAA
+        H4sIAPf+yVcAA6RVXY+bOhB9769Y7XtvwYTeIu22apJCgoLTkMRgv4GdLR82
+        RCWBwK/vmGy3Wym3qnQfUCIYz5w558z44dNFybv28L3J6+rx3vzHuL87VLwW
+        efXt8X6/c99+uP/08c0Dl/mhOr091eWh+vjm7u6hTeT58PHQ+4jF/pBEznlZ
+        1P1q5mciDuvU8o8H5Rr6fajkmSHS84V/TKtNvs79kio3x8W3CTwXuiNF4JGS
+        DrzHHp3gOR3YHMO7zYALfmEKF8zbW+vdvl97boGH/STQZwo+4LmUEGPAN/Tk
+        4Z5FrsGi8InGGycoPl9wbnTrrdEFctMHRQ356mG9nVh4KOF/2eFd+T2Yf+4C
+        92LCb4+VKbnCNY1sI0ay/LoTPfO4HajaosqwmGrMZI652MGZgnUi8pskwk8J
+        IvbXyLQSdfp+WIiCz4OeolOdKpoDJ0WKbJVEgnDV6f5rsQg7PtTtCrldsrUH
+        qAecOJOV8nsaybNY+JJFIhMesWhcnilyTutiYwS9cwK+i8RzISZoseWXbCj7
+        pBB5uhMqGUgNMUXqSZlWmofpcWXRywrhNlXsyCzS0zg8pmgy4oI8TeoRrc+w
+        LI5pvO1yFtkoiX2IN+WzXi/4lnmXU3Q5Qoyxgdwk9hvQPU8WocEXwftV72Tc
+        K88cuWfm+e1hZudcuaB7CNqQCmpLgVx7pQDPrjbwPGjTCDChLIOYYTXc4jto
+        f9aMR76WzVK5A0fE4Cbp09ny/VJlhlhMh3X+oaUxHlgMuf7A5dhHTIzEvXUe
+        3s9sBPVOaf932oz5IjtLFxI8jzWX/y6rG7mf+1hF7plGF1t4suB/WeM/uMmf
+        QDPhZZrfL3tEChH7MgQsVF0kg/qQy2QQwz3Xhqf507cRtwqP3Jo2NJZrGplS
+        67u3QplG4InF5urnq798nSOtSJPOIAfMt1BucSCv+/6sPSEPnnvi3kWOum+d
+        js9Aw4qATv6UWbpX7bXwt/nQfLEYfBFPG7a1YYaMVnjOMHIN+jPyf7S/xt3w
+        L8wEKRLkmGJmd8BBR6Pu5RzzJPCMjc2r+j/7Bz2b1BJLjR14NHhFJHAFfbEj
+        V84ZfH4WX+x2p4ghkNMn/S/+b8xcyxSD3WJLXVfAd8Crdxt+mX+ozZTbcLSH
+        eXjV7x7DOV1Llrq3NHIH6L//6b2g1/MDu9i7HFMlXvM/3PLGq/mcUtgjgMXY
+        Rte9AHlP4NtGaD0VNnkF/Spsb2PcbpBTsi3oI8kunPnOdQ/K86jdnoD//Ybp
+        PIrB3GDN1a/d9oz99n7T3mFQx2zH/hBTV02nHeyyDeicr6sm51aYiYXea5oD
+        0HXs+4qfV3KeonD0NiHB6GmYG9DWLg573MJ9o/sje2P0+2+4NIdJBLs0XuqY
+        X99mdslieqaVnyW6hgL9KwyamYDxYqyUbDVObpGOe04P3JUvXrCCfC2bXCg5
+        0HG/mRng13dRxtWIIQMdJktpOk+bx8eHd9f7983Du99v5h8AAAD//wMAwcP3
+        59AHAAA=
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:51 GMT
+  recorded_at: Fri, 02 Sep 2016 22:36:39 GMT
 recorded_with: VCR 3.0.3
diff --git a/spec/fixtures/cassettes/braintree/void.yml b/spec/fixtures/cassettes/braintree/void.yml
index df044e442fe..1f7c4dab514 100644
--- a/spec/fixtures/cassettes/braintree/void.yml
+++ b/spec/fixtures/cassettes/braintree/void.yml
@@ -8,7 +8,7 @@ http_interactions:
       string: |
         <?xml version="1.0" encoding="UTF-8"?>
         <transaction>
-          <amount type="integer">1</amount>
+          <amount type="integer">40</amount>
           <payment-method-nonce>fake-paypal-future-nonce</payment-method-nonce>
           <type>sale</type>
         </transaction>
@@ -31,7 +31,7 @@ http_interactions:
       message: Created
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:12 GMT
+      - Fri, 02 Sep 2016 22:36:09 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -52,56 +52,56 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"cb248351f7018347db27551faac8a928"
+      - W/"11a1c3503b84cf6d9c6b7689b686e463"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - fe02fb5c-7c8e-4569-8957-26b983914c96
+      - 83c3cb13-7fd3-4646-aada-0f0343c5e792
       X-Runtime:
-      - '0.339175'
+      - '0.349462'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAAD5yVcAA+xYTW/jNhC951cEvjOyHcebXSjKZpF0kSKHRXdzaC8BJY4s
-        NhSpkpRj76/vUF+WIirxoSh6KJBDNPM4HM4MZx4dXu9ycboFbbiSV7PF2Xx2
-        CjJRjMvN1ezxxy/kcnYdnYRWU2loYhEVnZyehpxF7OdP+pJqGQb44WTGUlua
-        iJY2U5r/BBYGjchp7b6AyFABYVD962RJqTXutifcKIKbQvT4/TYMxmIHprkq
-        pY3QxXkYNB9OnoNOMiotoUnihATdMRbyWAkbBj5t5WwZE4/uVHJxNbO6hFlQ
-        W6doSx8FVZoh0qNINFALjFB76o5+NWP4aXkOs2g5X6zJ/COZL38sl58WC/z7
-        AwPQLajWlwU7fv0S1x8WNGE2VuEJ3EeVu9ceojDl2lgiaQ4epaDTukTlBZV7
-        jwZyyoVH/gKx4dZnq8iU9MlTuhsFNeifKoy5EFiy//IJjdUAWBOMaTDGF4Kd
-        BclcJiYhQiVUcOszr2GD980XJ4UXS1RXw+svFqjeTx+nVrvVhIoio8ujUOfv
-        oWSJ2eDJOFO95OCZ0lIy3y3pNKapcqo13Q+UGMheI/IZKai2HENjwFoBOeBN
-        Ha7wGT90rPfM98zG1CaZF5Pxovi/Fv+jtdjPTtMYScpBMNPUwtYQ0FppgjEq
-        lDTgPVqF6x19iI7ucUK9CWhNDLPmt/ImpjrGdjteORY66Abnwgvdo+ZPqKsc
-        R40ZJzYstEpwN4xDeztoBfcG4wAe7riYu1k9pZ1YabFQo5sCNVtHIaYQVQQZ
-        484rjPEYNvJyq3ji8pBifnEFlkgMenyW0k163KUe5xMoS3ek5iBeFewgL9pp
-        HSslgMpZlFJhHP3pAC07wFOQhGrWVLJVz+C7ajH3Sat2sfJdCLRInAveZlBw
-        XWc0V9JmURiMRCPkHqgeAitJs1szjolrItbfK5xHmRJVXP0Nged0A6TUIsqs
-        LcynIKAGm645izXl0l2EpoLPsBMGBd27XvyUA5YoexJqo4JSPkv1Is8KubkG
-        ueVaSYe5MlSyWO2QrXZbNA1MQ0GRFT7WC13F1YJanQEVNkPP4YDoyWoQg5jb
-        g77+bFSlxrxh2W1K4UhZD/Va07V4xzZxih2gPVnjNN1rJXqIVtCE0ZgSmxwO
-        Kfl8wAykw6apUuK0VCbQ33WsbGOmWJlUZLoXtk5Wg0rJ/yqhuUEoxixwbLWj
-        y+SuJshcEcOeJ65Mp2+o3/DKNC8PknEsQb0fTPhuOlYIQENNYtw9QwqNirw4
-        klZ3+M7Cm0+eCjHxaqkDZJC9doX9uX20uNJGDm9awu487dESo7BDQUQLjh6N
-        5fV5g9cH7iRNkOpeJ6if5pSxSTQvJmlQT9/1porjkQLHrmIEmQZx4fR2sQES
-        3dLWi0WXX+3jGj7B3u7hcIybqly9OqitqLZXTTSfqecH9oqxb0OjyI/cqxXP
-        NVHBnb7u+fiWlDC2ijnfuiGVAkyNF7eteiF1NkdaDENcalNTVAYWX2CmbUQD
-        lT83PX7r336IGT3Uj4TDzgUAu7D2u+G4PlYqsjKfwTJJPPQVMzJxdnfyorTg
-        K41mghAukWWV9XvB/TqB8oKKp+a1HwZTuCGH6Z11SHX6NGYS9L6tivi8Z6tj
-        RzbDrkLwhrnSA3Q9VZ73kjvnO7wDQdjAq+d8VP3/GXbYBQXUnaqv7hbU0WLR
-        t5vfScoSevFhccnYZZosVuv5JaxhcU57YW1nxpBsovj7zcMduVgv6SI+B1il
-        q4/0o+ukr3H/FH2oA3I8e8BRX26cA7d3Xx6/ElgBWyfJerG6nFc8oFYe4ghk
-        6meR/mNkMgl1RO9+e7q/JfP5+ZqtLhfzJXxYXizmbSYG+2lyeGtGv6pMtqie
-        uI/uHp/RrYIWexC2d1oIFGMd2uYV0Uy9u4f7r/dfHu6wdU9BWiZY2KoofUed
-        /I3g1SSc7pIe4DG9qu3pHvYaBu1VGUzd6ORvAAAA//8DAI3ExxxCFQAA
+        H4sIANn+yVcAA+xYS2/jNhC+51cEvjOSnWwSB4r2gaSLFHsouptDewkocWSx
+        oUgtSTl2f32HelmKqI0LFEUPvVkzH4ecB2c+Onq/K8TpFrThSt4ulmfh4hRk
+        qhiXm9vF47efyPXifXwSWU2loalFVHxyehpxFq/2V983S30dBfjhZMZSW5mY
+        VjZXmv8JLApakdPafQmxoQKioP7pZGmlNe62J9wogptC/Pj1LgqmYgemhaqk
+        jS/CszCMgvbLKQrQaU6lJTRNnZDgeYyFIlHCRoFPW5+2SohHdyq5uF1YXcEi
+        aKxTtKWPgirNEOlRpBqoBUaoPXW+3y4YflpewCJehctLEq5JuPq2Wt2cX96E
+        698xAv2Cen1Vsr+3/rCgjbOxCj1wH3XyXp8QhRnXxhJJC/AoBZ3Xpaooqdx7
+        NFBQLjzyF0gMtz5bZa6kT57R3SSowdCrKOFCYM3+yx4aqwGwJhjTYIwvBDsL
+        krlMzEKESqng1mdewwYvnC9OCm+WqO+G97xYoHo/706jdqsJFWVOV0ehzt9C
+        yQqzwdNppgbJQZ+ySjLfLek1pq1yqjXdj5QYyEEn8hkpqbYcQ2PAWgEF4E0d
+        r/AZP7Sst8wPzCbUprkXk/Oy/L8W/6O1OMxO2xhJxkEw09bC1hDQWmmCMSqV
+        NOB1rcYNXB+j4wecUD8EdCbGWfNb+SGmdmO7na6cCh10g3Phhe5R8wc0VY6j
+        xkwTG5VapbgbxqG7HbSGe4NxAI93XIZuVs9pZ1ZaLNT4Y4mareMQc4g6goxx
+        dyqM8RQ2OeVW8dTlIcP84goskQT01JfKTXrcpRnnMyhLd6ThIF4V7KAou2md
+        KCWAykWcUWEc/+kBHTtAL0hKNWsr2apn8F21hPukdbu48F0ItEjcEbzNoOS6
+        yWihpM3jKJiIJsg9UD0G1pJ2t3YcE9dErL9XuBPlStRx9TcEXtANkEqLOLe2
+        NDdBQA02XXOWaMqluwhtBZ9hJwxKune9+KkALFH2JNRGBZV8lupFnpVy8x7k
+        lmslHebWUMkStUO62m/RNjANJUVW+NgsdBXXCBp1DlTYHE8OB8RA1oAYJNwe
+        9M1nq6o05g3LblMJR8oGqNeavsU7tolT7AAdyNpD071WYoDoBG0YjamwyeGQ
+        ks8HzEg6bpoqI05LZQrDXafKLmaKVWlNpgdh62UNqJL8ewXtDUIxZoFjq51c
+        Jnc1QRaKGPY8c2V6fUv9xlemfXqQnGMJ6v1owvfTsUYAGmoT4+4ZUmhUFOWR
+        tLrH9xZ++OapEXPPliZCBulrX9kfuleLq20k8aZj7O6oA15iFLYoiGnJ8UhT
+        eeNw8NrjXtJGqWl2gvp5TpWYVPNylgcN9H1zqkkeKXHuKkaQahAXT28bGyHx
+        WNp6sXjkV/u4jk+wuXtIHOOmrlevDhorqmtWM91n7v2BzWJ6trFRJEju3Yp+
+        zZRwr2+aPj4mJUytYs63bkplAHPzxW2rXkiTzYkWw5BU2jQclYHFJ5jpOtFI
+        5c/NgOD6tx9jJk/1I+GwcwHANqz9x3BkHysVaZnPYJWmHv6KGZnx3XleVhZ8
+        pdGOEMIl0qyqeTC4/ydQXlLx1D73o2AONyYxA1/HXGfIY2ZBb9uqmc9btnp6
+        ZHPsKgRvmCs9wKNnyvNgcn6+QTwQhB28fs/H9e8PsMM2KKDpVEN1v6CJFot/
+        +fgbyVY0BThPLpbZ9ZKt01XI6PJ8tR6EtRsaY7aJ4q8fv9yTdHkVXp0vQ2Br
+        9u56/Q476WvcP8UfmoAcTx9w1lcbd4C7+0+Pnwm7ughhuU5hla1rItAoD3EE
+        Mve/yPA1MpuEJqL3vz493JHz9XVG311dXiRLoOuQdZkY7afJ4bEZ/6xy2aEG
+        4iG6f33Gdwo67EHY3WkhUIx1aNtnRDv27r88fH749OUeW/ccpKOCpa2L0ufq
+        7J8ErybhfJf0AI/pVV1P99DXKOiuymjqxid/AQAA//8DALtkqRVEFQAA
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:50 GMT
+  recorded_at: Fri, 02 Sep 2016 22:36:09 GMT
 - request:
     method: put
-    uri: https://api.sandbox.braintreegateway.com/merchants/7rdg92j7bm7fk5h3/transactions/dzzawfrn/void
+    uri: https://api.sandbox.braintreegateway.com/merchants/7rdg92j7bm7fk5h3/transactions/2y7qg1r8/void
     body:
       encoding: UTF-8
       string: ''
@@ -124,7 +124,7 @@ http_interactions:
       message: OK
     headers:
       Date:
-      - Fri, 02 Sep 2016 22:11:12 GMT
+      - Fri, 02 Sep 2016 22:36:09 GMT
       Content-Type:
       - application/xml; charset=utf-8
       Transfer-Encoding:
@@ -145,52 +145,52 @@ http_interactions:
       Content-Encoding:
       - gzip
       Etag:
-      - W/"21286df229a3b38126ae34970f669f91"
+      - W/"f133fdd9724b142eb9c87d4f59f67117"
       Cache-Control:
       - max-age=0, private, must-revalidate
       X-Request-Id:
-      - bef59749-bab9-4e4d-8385-24991a5b2946
+      - b356b1ff-7bc6-4612-af21-4c0d2e561883
       X-Runtime:
-      - '0.161856'
+      - '0.207812'
       Strict-Transport-Security:
       - max-age=31536000; includeSubDomains
     body:
       encoding: ASCII-8BIT
       string: !binary |-
-        H4sIAAD5yVcAA+xYS3PbNhC+51dodIcpyYriZGg6ydjNuONDpokP7cUDEksR
-        NQiwAChL/vVd8CXSBGMd2k4OnfHB2v3w2PcHhlf7XMx2oA1X8nK+PFvMZyAT
-        xbjcXs7vv/9CLuZX0ZvQaioNTSyiojezWchZxJ6f6VOqZRjgDyczltrSRDvF
-        GbAwaH46jT0UEBkqIAyqf50sKbXGkw6EG0XwQIjuv12HwVjswDRXpbQRXm8R
-        Bs0PJ89BJxmVltAkcUKCVzEW8lgJGwY+bXXRMiYe3UxycTm3uoR5UO9OcS99
-        ElRphkiPItFALTBC7cyZfjln+NPyHObRarHckMV7slh9X60+LJf49wc6oFtQ
-        rS8Ldvr6Fa4/LmjcbKxCC9yPKm4vb4jClGtjiaQ5eJSCTusSlRdUHjwayCkX
-        HvkTxIZb315FpqRPntL9yKlB36ow5kJguv7HFhqrATAnGNNgjM8FewuSuUhM
-        QoRKqODWt72GLdaaz08KC0tUpeG9LyaoPkybU6vdakJFkdHVSajz11CyxGjw
-        ZBypXnDQprSUzFclncY0WU61poeBEh3Za0K+TQqqLUfXGLBWQA5YqcMVvs1p
-        aTOl+fPr2/e2jalNMi8m40Xxfy7+pLnYj07TGEnKQTDT5MLOENBaaYI+KpQ0
-        4DWtwvVMH6KjW5xQPwS0Wwyj5t/lh5jKjN1uvHIsdNAtzoUnekDNn1BnOY4a
-        Mw5sWGiV4Gnoh7Y6aAX3OuMIHp64XLhZPaWdWGkxUaNPBWp2jkJMISoPMsbd
-        rdDHY9jolkhKEheHFOOLKzBFYtBjW0o36fGUepxPoCzdk5qDeFWwh7xop3Ws
-        lAAq51FKhXH0pwO07ACtIAnVrMlkqx7BV2ox90mrdrH2FQTuSNwVvM2g4LqO
-        aK6kzaIwGIlGyANQPQRWkua0ZhwT10Ssv1e4G2VKVH71NwSe0y2QUosos7Yw
-        H4KAGmy65izWlEtXCE0Gn2EnDAp6cL34IQdMUfYg1FYFpXyU6kmeFXJ7BXLH
-        tZIOc2moZLHaI1PtjmgamIaCIiu8rxe6jKsFtToDKmyGN4cjoierQQxibo/6
-        +mejKjXGDdNuWwpHynqol5quxTu2iVPsCO3JmkvTg1aih2gFjRuNKbHJ4ZCS
-        j0fMQDpsmiolTktlAv1Tx8rWZ4qVSUWme27rZDWolPyvEpoKQjFGgWOrHRWT
-        K02QuSKGPU6UTKdvqN+wZJpXB8k4pqA+DCZ8Nx0rBOBGTWBcnSGFRkVenEir
-        O3y3Q/O+ORKI/pOnQky8WmoHGWSvXWJ/bB8tLrWRw5uWsLub9miJUdihIKIF
-        xxuN5bW9wdjgf9kH4yffT2V/J2mSpO71gvppXhmbRPNikgb29F1vrjguKZB2
-        KEaQaRHnSm8XHyDxWtp6sXjlF+e4gUdwtnk4LOOmKlevDupdVNurJ5rv1PML
-        e+X4bsNNkR+6VzvaNVHBnb6eefiWljDeFWO+c0M6BZgar+5Y9UTqaI606Ia4
-        1Kam6AwsvkBN24gHKn9sevzef/wQM/pQcSIc9s4BOIW0/xrurYOZiqzUt2GZ
-        JB76jhGZsN1ZXpQWfKnRTFDCJbLMsn4vua8zKC+oeGi+doTBFG7I4Xq2Dqle
-        n8ZNgl7fqyJ+r+3VsUObYVchWGEu9QCvnirPe9HZ+QrvQhAOsOpzRlT9/xH2
-        2AEF1J2qr+4W1N5i0ddPv5OUJfTtu+UFYxdpslxvFhewgeU57bm1nZlDso3i
-        b5/ubsjbzYou43OAdbp+T9+7TvoS90/Rp9ohp7MnpDrl1l3g+ubz/RcCa2Cb
-        JNks1xeLigfVyqMfgUx9Fuo/xiaDUHv05reH22uyWJxv2PpiuVjBu9Xb5aKN
-        xOA8TY5v7ehXlckW1RP30d3jO7pW0GKPwramhUAx5qFtXlHN1Lu5u/1y+/nu
-        Blv3FKRlwoWtktJn6uQ3kheTcLpLeoCn9Kq2p3vYexi0pTKYutGbvwEAAP//
-        AwDYYZg3PhYAAA==
+        H4sIANn+yVcAA+xYS3PbNhC++1d4dIdJyU9laCbO2M24k0OniQ/txQMSSxE1
+        CDAAKEv99V3wJdIEY3em7eTQm7T74bHvD4ze7wpxvAVtuJLXi+VJuDgGmSrG
+        5eZ68fD1J3K1eB8fRVZTaWhqERUfHR9HnMWr/eW3zVJfRQH+cTJjqa1MvFWc
+        AYuC9q/T2H0JsaECoqD+6WRppTWetCfcKIIHQvzw5TYKpmIHpoWqpI3PwpMw
+        jIL2n1MUoNOcSktomjohwbsYC0WihI0Cn7a+aZUQj+5YcnG9sLqCRdDsTnEv
+        /Sao0gyRHkWqgVpghNpjZ/v1guFfywtYxKtweUHCNQlXX1erd6cX78L17+iB
+        fkG9virZ31t/WND62ViFFrg/deBe3hCFGdfGEkkL8CgFndelqiip3Hs0UFAu
+        PPJnSAy3vr3KXEmfPKO7iVODoVVRwoXAfP2PLTRWA2BOMKbBGJ8LdhYkc5GY
+        hQiVUsGtb3sNGyw2n58UVpaoa8N7X0xQvZ83p1G71YSKMqerN6FOX0PJCqPB
+        02mkBsFBm7JKMl+V9BrTZjnVmu5HSnTkoAv5NimpthxdY8BaAQVgpY5X+Dan
+        lc2V5n++vv1g24TaNPdicl6W/+fiD5qLw+i0jZFkHAQzbS5sDQGtlSboo1JJ
+        A17TatzA9DE6vscJ9V1At8U4av5dvoupzdhupyunQgfd4Fx4pnvU/AFNluOo
+        MdPARqVWKZ6Gfuiqg9ZwrzMO4PGJy9DN6jntzEqLiRrflKjZOg4xh6g9yBh3
+        t0IfT2GTWyIrSV0cMowvrsAUSUBPbancpMdTmnE+g7J0RxoO4lXBDoqym9aJ
+        UgKoXMQZFcbxnx7QsQO0gqRUszaTrXoCX6kl3Cet28WZryBwR+Ku4G0GJddN
+        RAslbR5HwUQ0Qe6B6jGwlrSnteOYuCZi/b3C3ShXovarvyHwgm6AVFrEubWl
+        eRcE1GDTNSeJply6Qmgz+AQ7YVDSvevFjwVgirJHoTYqqOSTVM/ypJSb9yC3
+        XCvpMNeGSpaoHVLV/oi2gWkoKbLCh2ahy7hG0KhzoMLmeHM4IAayBsQg4fag
+        b/62qkpj3DDtNpVwpGyAeqnpW7xjmzjFDtCBrL003WslBohO0LrRmAqbHA4p
+        +XTAjKTjpqky4rRUpjA8darsfKZYldZkeuC2XtaAKsm/VdBWEIoxChxb7aSY
+        XGmCLBQx7GmmZHp9S/3GJdM+O0jOMQX1fjTh++lYIwA3agPj6gwpNCqK8o20
+        usf3O7QPnAOBGL55asTcs6XxkEH62mf2h+7V4nIbSbzpGLu76oCXGIUtCmJa
+        crzSVN4YHEwt/pedMH30/VgO6CVtmjTdXlA/0asSk2pezhLBgb7vzjXLJSUS
+        D8UIci3ifOnt4yMkXktbLxav/OIcN/IITjcPi2Xc1AXr1UGzi+q69Uz7nXuA
+        Ybec3m28KTJE93BHu2ZquNc3Uw9f0xKmu2LMt25MZwBzA9Ydq55JE82JFt2Q
+        VNo0JJ2BxTeo6VrxSOWPzYDh+48fYybfKt4Ih51zAM4h7b+Ge+1gpiIv9W1Y
+        pamHwGNEZmx3lpeVBV9qtDOUcIk8s2peTO4DDcpLKh7b7x1RMIcbs7iBrWOy
+        NyRys6DX96qp32t79fzQ5thVCFaYSz3Aq2fK82J0dr7CvBCEI6z+oBHXvz/A
+        DluggKZTDdX9gsZbLP7l5jeSrWgKcJqcLbOrJVunq5DR5elqPXBrNzXHdBvF
+        X24+35F0eRleni5DYGt2frU+x076EvdPEajGIW/nT0h2qo27wO3dx4dPhF2e
+        hbBcp7DK1jUTapQHPwKZ+zA0fI7NBqHx6N2vj/e35HR9ldHzy4uzZAl0HbIu
+        EqPzNDm8tuOfVS471EA8RPfP7/hWQYc9CLuaFgLFmIe2fUe1Y+/u8/2n+4+f
+        77B1z0E6LlzaOil9ps5+JXkxCee7pAf4ll7V9XQPf4+CrlRGUzc++gsAAP//
+        AwDQp4KAQRYAAA==
     http_version: 
-  recorded_at: Fri, 02 Sep 2016 22:11:50 GMT
+  recorded_at: Fri, 02 Sep 2016 22:36:09 GMT
 recorded_with: VCR 3.0.3
diff --git a/spec/models/solidus_paypal_braintree/gateway_spec.rb b/spec/models/solidus_paypal_braintree/gateway_spec.rb
index 19cec79cc32..3259e4cd421 100644
--- a/spec/models/solidus_paypal_braintree/gateway_spec.rb
+++ b/spec/models/solidus_paypal_braintree/gateway_spec.rb
@@ -3,27 +3,14 @@
 require 'support/order_ready_for_payment'
 
 RSpec.describe SolidusPaypalBraintree::Gateway do
-  let(:source) do
-    SolidusPaypalBraintree::Source.new(
-      nonce: 'fake-paypal-future-nonce'
-    )
-  end
-
   let(:gateway) do
     described_class.new
   end
 
-  cassette_options = { cassette_name: "braintree/purchase" }
-  describe '#purchase', vcr: cassette_options do
-    subject(:purchase) { gateway.purchase(10.00, source, {}) }
-
-    it 'returns a successful billing response', aggregate_failures: true do
-      expect(purchase).to be_a ActiveMerchant::Billing::Response
-      expect(purchase).to be_success
-      expect(purchase).to be_test
-      expect(purchase.message).to eq 'settling'
-      expect(purchase.authorization).to be_present
-    end
+  let(:source) do
+    SolidusPaypalBraintree::Source.new(
+      nonce: 'fake-paypal-future-nonce'
+    )
   end
 
   cassette_options = { cassette_name: "braintree/payment" }
@@ -53,37 +40,76 @@
     end
   end
 
-  cassette_options = { cassette_name: "braintree/authorize" }
-  describe "#authorize", vcr: cassette_options do
-    subject(:authorize) do
-      gateway.authorize(10.00, source, {})
+  describe "instance methods" do
+    let(:authorized_id) do
+      Braintree::Transaction.sale(
+        amount: 40,
+        payment_method_nonce: source.nonce
+      ).transaction.id
     end
 
-    it "returns a successful billing response", aggregate_failures: true do
-      expect(authorize).to be_a ActiveMerchant::Billing::Response
-      expect(authorize).to be_success
-      expect(authorize).to be_test
-      expect(authorize.message).to eq "authorized"
+    let(:sale_id) do
+      Braintree::Transaction.sale(
+        amount: 40,
+        payment_method_nonce: source.nonce,
+        options: {
+          submit_for_settlement: true
+        }
+      ).transaction.id
     end
-  end
 
-  cassette_options = { cassette_name: "braintree/void" }
-  describe "#void", vcr: cassette_options do
-    subject(:void) { gateway.void(response_code, source, {}) }
+    let(:settled_id) do
+      Braintree::TestTransaction.settle(sale_id).transaction.id
+    end
 
-    let(:response_code) do
-      result = Braintree::Transaction.sale(
-        amount: 1,
-        payment_method_nonce: source.nonce
-      )
-      result.transaction.id
+    cassette_options = { cassette_name: "braintree/purchase" }
+    describe '#purchase', vcr: cassette_options do
+      subject(:purchase) { gateway.purchase(10.00, source, {}) }
+
+      it 'returns a successful billing response', aggregate_failures: true do
+        expect(purchase).to be_a ActiveMerchant::Billing::Response
+        expect(purchase).to be_success
+        expect(purchase).to be_test
+        expect(purchase.message).to eq 'settling'
+        expect(purchase.authorization).to be_present
+      end
+    end
+
+    cassette_options = { cassette_name: "braintree/authorize" }
+    describe "#authorize", vcr: cassette_options do
+      subject(:authorize) { gateway.authorize(10.00, source, {}) }
+
+      it 'returns a successful billing response', aggregate_failures: true do
+        expect(authorize).to be_a ActiveMerchant::Billing::Response
+        expect(authorize).to be_success
+        expect(authorize).to be_test
+        expect(authorize.message).to eq 'authorized'
+        expect(authorize.authorization).to be_present
+      end
     end
 
-    it 'returns a successful billing response', aggregate_failures: true do
-      expect(void).to be_a ActiveMerchant::Billing::Response
-      expect(void).to be_success
-      expect(void).to be_test
-      expect(void.message).to eq 'voided'
+    cassette_options = { cassette_name: "braintree/credit" }
+    describe "#credit", vcr: cassette_options do
+      subject(:credit) { gateway.credit(20, source, settled_id, {}) }
+
+      it 'returns a successful billing response', aggregate_failures: true do
+        expect(credit).to be_a ActiveMerchant::Billing::Response
+        expect(credit).to be_success
+        expect(credit).to be_test
+        expect(credit.message).to eq 'settling'
+      end
+    end
+
+    cassette_options = { cassette_name: "braintree/void" }
+    describe "#void", vcr: cassette_options do
+      subject(:void) { gateway.void(authorized_id, source, {}) }
+
+      it 'returns a successful billing response', aggregate_failures: true do
+        expect(void).to be_a ActiveMerchant::Billing::Response
+        expect(void).to be_success
+        expect(void).to be_test
+        expect(void.message).to eq 'voided'
+      end
     end
   end