diff --git a/tox.ini b/tox.ini
index 5b9ec0f1f..2c69309d0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,6 @@ ignore_basepython_conflict = True
 [testenv]
 basepython = python3
 usedevelop = True
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
 passenv =
   LANG
   LANGUAGE