diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4d3e388..f753340 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -39,7 +39,7 @@ pathtools==0.1.2
 pbr==5.4.3
 pkginfo==1.5.0.1
 pluggy==0.13.0
-psutil==5.6.3
+psutil==5.6.6
 py==1.8.0
 pycodestyle==2.5.0
 pyflakes==2.1.1