diff --git a/doc/source/zuulv3.rst b/doc/source/zuulv3.rst
index 1afe672..14cd4df 100644
--- a/doc/source/zuulv3.rst
+++ b/doc/source/zuulv3.rst
@@ -39,7 +39,7 @@ information about Zuul v3.  Please at least read the first section,
 and then continue reading as long as subsequent sections remain
 relevant to the way you work.
 
-.. _Zuul v3 spec: https://specs.openstack.org/openstack-infra/infra-specs/specs/zuulv3.html
+.. _Zuul v3 spec: https://docs.opendev.org/opendev/infra-specs/latest/specs/zuulv3.html
 
 What's the Minimum I Need to Know?
 ==================================
diff --git a/tox.ini b/tox.ini
index 9031ffd..c6c77f4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,4 +13,5 @@ deps = -r{toxinidir}/requirements.txt
 commands = {posargs}
 
 [testenv:docs]
+basepython = python3
 commands = sphinx-build -W -d doc/build/doctrees -b html doc/source/ doc/build/html