diff --git a/tox.ini b/tox.ini
index 2a0db436..d2507bf7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,14 +6,17 @@ skipsdist=True
 usedevelop=True
 commands =
     {envpython} tests/test.py
-deps = -r{toxinidir}/requirements.txt
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
 
 [testenv:py27]
 usedevelop=True
 commands =
     {envpython} tests/test.py
-deps = -r{toxinidir}/requirements.txt
-
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
 [testenv]
 usedevelop=True
 commands =