diff --git a/tox.ini b/tox.ini
index 6987847f8..c559f1e47 100644
--- a/tox.ini
+++ b/tox.ini
@@ -57,6 +57,7 @@ commands =
 [testenv:pypy]
 basepython = pypy
 commands =
+    pip install PyPyDispatcher>=2.0.6
     py.test {posargs:scrapy tests}
 
 [testenv:py33]