diff --git a/setup.py b/setup.py
index 8a06e56..9f9bae5 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@ setup(name='cbpi',
           'shortuuid==1.0.1',
           'tabulate==0.8.7',
           'asyncio-mqtt',
-          'psutil',
+          'psutil==5.8.0',
           'numpy==1.20.3',
           'scipy',
           'cbpi4ui',