diff --git a/tox.ini b/tox.ini
index b59d122..03af844 100755
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
     SYSLOG_PORT=514
     IPMI_COMMAND=Dbus
 whitelist_externals = *
-install_command = pip install -U {opts} {packages}
+install_command = pip install {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
 commands =
     -mkdir -p {envtmpdir}