diff --git a/requirements.txt b/requirements.txt
index b396a4b..5a1eeec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ hexbytes==0.1.0
 idna==2.6
 lru-dict==1.1.6
 parsimonious==0.8.0
-psutil==5.4.5
+psutil==5.6.6
 pycryptodome==3.6.1
 PyYAML==3.12
 requests==2.18.4