diff --git a/setup.py b/setup.py
index f6be8d17..32c4448b 100644
--- a/setup.py
+++ b/setup.py
@@ -80,7 +80,7 @@ setup(name='ee',
           'python-apt',
           'pynginxconfig',
           'pymysql3 == 0.4',
-          'psutil',
+          'psutil == 3.1.1',
           'sh',
           'sqlalchemy',
           ],