diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 5569b115..8066b25e 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -5,8 +5,3 @@
   language: python
   types: [python]
   require_serial: true
-  additional_dependencies:
-    # This enables the pep257 extra from hacking by default. If you want
-    # to avoid it, just override additional_dependencies in your hook config
-    # by listing only `- .`. We assume that most users want this feature.
-    - .[pep257]
diff --git a/setup.cfg b/setup.cfg
index 98ec62fd..cfe1c1fc 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -62,7 +62,3 @@ flake8.extension =
     H903 = hacking.checks.other:hacking_no_cr
     H904 = hacking.checks.other:hacking_delayed_string_interpolation
     H905 = hacking.checks.imports:hacking_no_eventlet
-
-[extras]
-pep257 =
-  flake8-docstrings==1.7.0 # MIT