diff --git a/requirements.txt b/requirements.txt
index a2835eb..e78f330 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ nose2==0.6.5
 numpy==1.12.1
 packaging==16.8
 pluggy==0.4.0
-py==1.4.33
+py==1.10.0
 pyparsing==2.2.0
 pytest==3.0.7
 pytest-cov==2.4.0