diff --git a/requirements-dev.txt b/requirements-dev.txt
index 898ab65..771f841 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@
 
 # Testing
 pytest==2.5.1
-py==1.4.19
+py==1.10.0
 mock==1.0.1
 
 # Linting