diff --git a/requirements.txt b/requirements.txt
index e6f20f8..407b44b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ plaster==1.0
 plaster-pastedeploy==0.5
 pluggy==0.6.0
 psycopg2-binary==2.7.4
-py==1.5.3
+py==1.10.0
 pycodestyle==2.4.0
 pyflakes==1.6.0
 Pygments==2.2.0