diff --git a/cloudkitty/tests/gabbi/handlers.py b/cloudkitty/tests/gabbi/handlers.py
index cf4316ca..b0fc160a 100644
--- a/cloudkitty/tests/gabbi/handlers.py
+++ b/cloudkitty/tests/gabbi/handlers.py
@@ -17,10 +17,10 @@
 #
 import os
 
-from gabbi import handlers
+from gabbi.handlers import base
 
 
-class EnvironStoreHandler(handlers.ResponseHandler):
+class EnvironStoreHandler(base.ResponseHandler):
     """Hackish response handler used to store data in environment.
 
     Store data into an environment variable to implement some kind of variable
@@ -30,5 +30,6 @@ class EnvironStoreHandler(handlers.ResponseHandler):
     test_key_value = {}
 
     def action(self, test, key, value=None):
-        data = test.extract_json_path_value(test.json_data, value)
+        data = test.content_handlers[0].extract_json_path_value(
+            test.response_data, value)
         os.environ[key] = test.replace_template(data)
diff --git a/test-requirements.txt b/test-requirements.txt
index 1de1d4e0..23991205 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@ hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 coverage>=3.6 # Apache-2.0
 kombu<4.0.0 # BSD
 ddt>=1.0.1 # MIT
-gabbi>=1.11.0,<=1.25.0 # Apache-2.0
+gabbi>=1.26.1 # Apache-2.0
 testscenarios>=0.4 # Apache-2.0/BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 mock>=1.2 # BSD
diff --git a/tox.ini b/tox.ini
index 425fdddd..275d9c6b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ envlist = py35,py27,pep8
 setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning
 usedevelop = True
-install_command = pip install {opts} {packages}
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt