diff --git a/tox.ini b/tox.ini
index 5b9abe97..5623ab54 100644
--- a/tox.ini
+++ b/tox.ini
@@ -62,8 +62,10 @@ commands =
     pre-commit run --all-files --show-diff-on-failure
 
 [flake8]
-exclude=.venv,.git,.tox,dist,*egg,*.egg-info,build,examples,doc
 show-source = True
+# H904: Delay string interpolations at logging calls
+enable-extensions = H904
+exclude=.venv,.git,.tox,dist,*egg,*.egg-info,build,examples,doc
 
 [testenv:releasenotes]
 deps =