diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4d3e388..35f0356 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -40,7 +40,7 @@ pbr==5.4.3
 pkginfo==1.5.0.1
 pluggy==0.13.0
 psutil==5.6.3
-py==1.8.0
+py==1.10.0
 pycodestyle==2.5.0
 pyflakes==2.1.1
 Pygments==2.4.2