diff --git a/requirements.txt b/requirements.txt
index 5d4e6cd..386eb8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ numpy==1.16.4
 packaging==19.0
 pep8==1.7.1
 pkginfo==1.5.0.1
-psutil==5.6.2
+psutil==5.6.6
 pycodestyle==2.5.0
 pycosat==0.6.3
 pycparser==2.19