diff --git a/requirements.txt b/requirements.txt
index ffde872..724b6a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -129,7 +129,7 @@ ply==3.11
 poyo==0.4.2
 prometheus-client==0.6.0
 prompt-toolkit==1.0.15
-psutil==5.5.0
+psutil==5.6.6
 py==1.8.0
 pycodestyle==2.5.0
 pycosat==0.6.3