diff --git a/requirements.txt b/requirements.txt
index fc300b8..b4c8b1a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ markovchain==0.2.5
 multidict==4.5.2
 numpy==1.16.4
 passlib==1.7.1
-psutil==5.6.3
+psutil==5.6.6
 pycparser==2.19
 PyNaCl==1.3.0
 six==1.12.0