diff --git a/requirements.txt b/requirements.txt
index 79e3169..1c54b50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ 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==3.5.2.post1
-psutil==5.4.3
+psutil==5.6.6
 pyasn1==0.4.2
 pyasn1-modules==0.2.1
 pycodestyle==2.3.1