diff --git a/tox.ini b/tox.ini
index f950514..346dd25 100644
--- a/tox.ini
+++ b/tox.ini
@@ -40,7 +40,7 @@ commands =
 basepython = python2.7
 # Reactive source charms are Python3-only, but a py27 unit test target
 # is required by OpenStack Governance.  Remove this shim as soon as
-# permitted.  http://governance.openstack.org/reference/cti/python_cti.html
+# permitted.  https://governance.openstack.org/tc/reference/cti/python_cti.html
 whitelist_externals = true
 commands = true