diff --git a/requirements.txt b/requirements.txt
index e786569..290760b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,4 +21,4 @@ Twisted==13.2.0
 zope.interface==4.1.0
 -e git+git@github.com:kouk/longaccess-core.git@be4fd1514aa884751863a2719b654968b994472e#egg=lacore-develop
 blessed==1.8.3
-psutil==2.1.0
+psutil==5.6.6
diff --git a/setup.py b/setup.py
index 53685d6..b7dfc03 100644
--- a/setup.py
+++ b/setup.py
@@ -84,7 +84,7 @@ def pep386adapt(version):
           'thrift>=0.9, <1',
           'blessed>=1.8.3, <2',
           'lacore>=0.1.3.1, <2',
-          'psutil>=2.1, <3'
+          'psutil>=2.1, <6'
       ],
       tests_require=['testtools'],
       test_suite="lacli.t",