diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1e396a4..275dd02 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,7 +8,7 @@ Jinja2==2.8
 MarkupSafe==0.23
 pluggy==0.3.1
 pre_commit==0.9.4
-py==1.4.31
+py==1.10.0
 Pygments==2.1.3
 pytz==2016.4
 requests==2.10.0