diff --git a/{{cookiecutter.repo_name}}/tox.ini b/{{cookiecutter.repo_name}}/tox.ini
index 1f139fb..28ff820 100644
--- a/{{cookiecutter.repo_name}}/tox.ini
+++ b/{{cookiecutter.repo_name}}/tox.ini
@@ -13,7 +13,7 @@ setenv =
    OS_STDOUT_CAPTURE=1
    OS_STDERR_CAPTURE=1
    OS_TEST_TIMEOUT=60
-deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
        -r{toxinidir}/test-requirements.txt
 commands = stestr run {posargs}