diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8b055fe..f41277c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,3 +1,3 @@
 -r requirements.txt
-py==1.4.34
+py==1.10.0
 pytest==3.2.3