diff --git a/tox.ini b/tox.ini
index bad6a5e9b..4b45a09c9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ envlist = py27,py33,pep8
 [testenv]
 usedevelop = True
 deps =
-    -rrequirements.txt
+    -r{toxinidir}/requirements.txt
     mock
     coverage
 commands =
@@ -14,7 +14,7 @@ commands =
 [testenv:pep8]
 basepython = python2.7
 deps =
-    -rrequirements.txt
+    -r{toxinidir}/requirements.txt
     hacking
     docutils
 commands =