diff --git a/tox.ini b/tox.ini
index 86170adfeb..02688d9a9e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,6 +33,7 @@ commands = python setup.py build_sphinx
 [testenv:irc]
 deps = PyYAML
      irc
+     jaraco.itertools<1.6
 commands =
   {toxinidir}/tools/check_irc_access.py -l accessbot/channels.yaml openstackinfra
   {toxinidir}/tools/irc_tests.py