diff --git a/dev-requirements.txt b/dev-requirements.txt
index f3fb4669..f7c3a1a0 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -11,7 +11,7 @@ paramiko==2.4.2
 pep8==1.7.0
 git+https://github.com/mitsuhiko/platter.git#egg=platter
 pluggy==0.3.1
-py==1.4.31
+py==1.10.0
 pycodestyle==2.3.1
 pycryptodome==3.6.6
 pyflakes==1.6.0