diff --git a/test-requirements.txt b/test-requirements.txt
index 09d939bf9..673ad81b2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 # Hacking already pins down pep8, pyflakes and flake8
-hacking>=3.0.1,<3.1.0 # Apache-2.0
+hacking>=4.1.0,<4.2.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 stestr>=2.0.0 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index ed3ebe3dc..8e530723c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -152,17 +152,13 @@ ignore-path = .venv,.git,.tox,*designate/locale*,*lib/python*,*designate.egg*,ap
 [flake8]
 # ignored flake8 codes:
 # H105 don't use author tags. We use version control instead
-# H302 import only modules
-# H238 old style class declaration, use new style (inherit from `object`)
-# H402 one line docstring needs punctuation
 # H404 multi line docstring should start with a summary
 # H405 multi line docstring summary not separated with an empty line
 # H501 Do not use locals() or self.__dict__ for string formatting.
-# H904 Wrap long lines in parentheses instead of a backslash
 # E126 continuation line over-indented for hanging indent
 # E128 continuation line under-indented for visual indent
 # W504 line break after binary operator
-ignore = H105,H302,H238,H402,H404,H405,H501,H904,E126,E128,W504
+ignore = H105,H404,H405,H501,E126,E128,W504
 exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build,tools,.ropeproject
 
 [hacking]