diff --git a/tox.ini b/tox.ini
index 646263c93..682a955b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -64,9 +64,11 @@ commands = pifpaf -g AODH_TEST_STORAGE_URL run postgresql -- oslo_debug_helper {
 [flake8]
 ignore =
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build
-# [H106] Don't put vim configuration in source files.
+# [H106] Do not put vim configuration in source files.
 # [H203] Use assertIs(Not)None to check for None.
-enable-extensions=H106,H203
+# [H204] Use assert(Not)Equal to check for equality.
+# [H205] Use assert(Greater|Less)(Equal) for comparison.
+enable-extensions=H106,H203,H204,H205
 show-source = True
 
 [hacking]