diff --git a/requirements.txt b/requirements.txt
index abf57da..25da7e7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 scipy==0.19.0
 numpy==1.12.1
-py==1.4.33
+py==1.10.0
 pytest==3.0.7
 pillow