deps =
     -r{toxinidir}/requirements-docs.txt
     -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
-    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=montreal
 commands =
     sphinx-build -W -q -b html -n -d {envtmpdir}/doctrees ./ {toxinidir}/_build/html
     echo "Generated docs available in {toxinidir}/_build/html"
 deps =
     -r{toxinidir}/requirements-docs.txt
     -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
-    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=montreal
 commands = sphinx-build -W -q -b linkcheck -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/linkcheck
 
 [testenv:docs-spellcheck]
 deps =
     -r{toxinidir}/requirements-docs.txt
     -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
-    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=montreal
 commands = sphinx-build -W -q -b spelling -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/spellcheck