diff --git a/requirements.txt b/requirements.txt
index ece0dd2..a84f3db 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 coverage==4.1
 flake8==2.6.2
 mccabe==0.5.0
-py==1.4.31
+py==1.10.0
 pycodestyle==2.0.0
 pyflakes==1.2.3
 pytest==2.9.2