diff --git a/Hermes/setup.py b/Hermes/setup.py
index 6ea60cccb8..c1dc19f042 100644
--- a/Hermes/setup.py
+++ b/Hermes/setup.py
@@ -12,7 +12,7 @@
   install_requires=[
     'appscale-common',
     'appscale-admin',
-    'psutil==5.6.3',
+    'psutil==5.6.6',
     'attrs==19.1.0',
     'mock==2.0.0',
     'aiohttp==2.3.9'