basepython = python3.8
 deps =
     -r{toxinidir}/requirements-docs.txt
-    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://releases.openstack.org/constraints/upper/yoga
     -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
     sphinx-build -q -b html -n -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/html
 basepython = python3.8
 deps =
     -r{toxinidir}/requirements-docs.txt
-    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://releases.openstack.org/constraints/upper/yoga
     -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
     sphinx-build -q -b linkcheck -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/linkcheck
 basepython = python3.8
 deps =
     -r{toxinidir}/requirements-docs.txt
-    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://releases.openstack.org/constraints/upper/yoga
     -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
     sphinx-build -q -b spelling -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/spellcheck
 
 envlist = py3, pylint, flake8diff
 
 [testenv]
+allowlist_externals=/bin/cp, /bin/bash, /bin/rm
 distribute = False
 basepython=python3
 setenv   =
 source=./apps/,./osdf/,osdfapp.py,./runtime/,solverapp.py
 
 [testenv:pylint]
-whitelist_externals=bash
+allowlist_externals=bash
 commands = bash -c "pylint --reports=y osdf apps runtime| tee pylint.out"
 
 [testenv:py3]
 
 [testenv:flake8diff]
 basepython=python3
-whitelist_externals=bash
+allowlist_externals=bash
 deps = hacking>=2.0.0
 commands =
   bash -c "files=$(git diff HEAD^ HEAD --diff-filter=d --name-only | grep -E '(^apps\/|osdf\/|runtime\/)'| grep -E '*\.py$'); if [[ -z $files ]]; then exit 0; else flake8 $files; fi"