diff --git a/tox.ini b/tox.ini
index 946bfe4..bfe256a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,11 @@
 [tox]
-envlist = py27,py33,py34,py35,report,check
+envlist = py{27,33,34,35}-pillow{30,31},report,check
 
 [testenv]
 commands = py.test --cov sigal --cov-report term-missing
 deps =
+    pillow30: Pillow==3.0.0
+    pillow31: Pillow>3.0.0
     pytest
     pytest-capturelog
     pytest-cov