diff --git a/otc_metadata/templates/tox.ini.j2 b/otc_metadata/templates/tox.ini.j2
index ed8b8e26..8be94f0e 100644
--- a/otc_metadata/templates/tox.ini.j2
+++ b/otc_metadata/templates/tox.ini.j2
@@ -13,6 +13,8 @@ commands = stestr run {posargs}
   stestr slowest
 
 [testenv:pep8]
+allowlist_externals =
+  doc8
 commands =
   doc8 doc/source README.rst