diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4ee9047..c1b6d79 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 docopt==0.6.2
-py==1.4.32
+py==1.10.0
 pykwalify==1.6.0
 pytest==3.0.6
 python-dateutil==2.6.0