diff --git a/requirements.txt b/requirements.txt
index 14a938a..53e9f96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -111,7 +111,7 @@ pkginfo==1.4.1
 pluggy==0.6.0
 ply==3.10
 prompt-toolkit==1.0.15
-psutil==5.4.3
+psutil==5.6.6
 ptyprocess==0.5.2
 py==1.5.2
 pycodestyle==2.3.1