diff --git a/requirements.txt b/requirements.txt
index af439d7..3dc9604 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ coverage==4.4.2
 idna==2.6
 jsonpickle==0.9.5
 pluggy==0.6.0
-py==1.5.2
+py==1.10.0
 pytest==3.3.2
 pytest-cov==2.5.1
 requests==2.18.4