diff --git a/test_requests.py b/test_requests.py
index b1fe22cd..8a6b0ae0 100755
--- a/test_requests.py
+++ b/test_requests.py
@@ -5,10 +5,8 @@ from __future__ import with_statement
 
 import unittest
 import cookielib
-try:
-    import simplejson as json
-except ImportError:
-    import json
+
+import omnijson as json
 
 import requests
 
diff --git a/tox.ini b/tox.ini
index 87e79ac4..3c2ef1f6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,3 +5,4 @@ envlist = py25,py26,py27
 commands=py.test --junitxml=junit-{envname}.xml
 deps =
     pytest
+    omnijson