diff --git a/oslo.{{cookiecutter.module_name}}/tox.ini b/oslo.{{cookiecutter.module_name}}/tox.ini
index 66ee196..5655965 100644
--- a/oslo.{{cookiecutter.module_name}}/tox.ini
+++ b/oslo.{{cookiecutter.module_name}}/tox.ini
@@ -8,7 +8,7 @@ skipsdist = True
 basepython = python3
 usedevelop = True
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
     -r{toxinidir}/test-requirements.txt
 commands = stestr run --slowest {posargs}
 
@@ -33,7 +33,7 @@ commands =
 allowlist_externals =
     rm
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
     -r{toxinidir}/doc/requirements.txt
 commands =
     rm -rf doc/build doc/source/reference/api