diff --git a/tox.ini b/tox.ini
index f1b5b86..320eb4e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -56,7 +56,13 @@
 commands = oslo_debug_helper -t patrole_tempest_plugin/tests {posargs}
 
 [flake8]
-enable-extensions = H106,H203,H904
+# [H106] Don’t put vim configuration in source files.
+# [H203] Use assertIs(Not)None to check for None.
+# [H204] Use assert(Not)Equal to check for equality.
+# [H205] Use assert(Greater|Less)(Equal) for comparison.
+# [H210] Require ‘autospec’, ‘spec’, or ‘spec_set’ in mock.patch/mock.patch.object calls
+# [H904] Delay string interpolations at logging calls.
+enable-extensions = H106,H203,H204,H205,H210,H904
 show-source = True
 # E123, E125 skipped as they are invalid PEP-8.
 #