diff --git a/requirements.txt b/requirements.txt
index bd6bfec..0ec2b46 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ plaster==1.0
 plaster-pastedeploy==0.4.2
 pluggy==0.6.0
 poyo==0.4.1
-py==1.5.2
+py==1.10.0
 pylint==1.8.2
 pyramid==1.9.1
 pyramid-celery==3.0.0