diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6b8bc57..b4684a7 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@
 
 # Testing
 pytest==3.2.3
-py==1.4.34
+py==1.10.0
 mock==1.0.1
 
 # Linting