diff --git a/requirements.txt b/requirements.txt
index e73e428..b5093b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ proto-google-cloud-datastore-v1==0.90.4
 proto-google-cloud-error-reporting-v1beta1==0.15.3
 proto-google-cloud-logging-v2==0.91.3
 protobuf==3.4.0
-psutil==5.4.1
+psutil==5.6.6
 pyasn1==0.3.7
 pyasn1-modules==0.1.5
 pyreadline==2.1