diff --git a/tox.ini b/tox.ini
index 3e1df61797..e460fd541e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,6 @@ envlist = pep8,py27,py37,tht
 
 [testenv]
 usedevelop = True
-install_command = {envpython} -m pip install {opts} {packages}
 deps =
        -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
        -r{toxinidir}/requirements.txt