diff --git a/requirements-dev.txt b/requirements-dev.txt
index 904b28b..d8846a4 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,7 @@
 # Testing
 pytest==2.6.4
 pytest-cov==1.8.1
-py==1.4.26
+py==1.10.0
 mock==1.0.1
 responses==0.3.0