diff --git a/tox.ini b/tox.ini
index bdc14a128..0fdea11bb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -54,6 +54,11 @@ commands =
     pip install -U https://github.com/scrapy/queuelib/archive/master.zip#egg=queuelib
     py.test --cov=scrapy --cov-report= {posargs:scrapy tests}
 
+[testenv:pypy]
+basepython = pypy
+commands =
+    py.test {posargs:scrapy tests}
+
 [testenv:py33]
 basepython = python3.3
 deps =