diff --git a/requirements.txt b/requirements.txt
index 585185b2..f1afb128 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ more-itertools==5.0.0
 networkx==2.2
 numpy==1.16.2
 petl==1.2.0
-psutil==5.6.1
+psutil==5.6.6
 pyparsing==2.3.1
 pypeln==0.1.6
 pyrsistent==0.14.11