Release 3.9.1

docs/source/conf.py

@@ -31,6 +31,7 @@ needs_sphinx = '1.3'
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.doctest',
+    'sphinx.ext.extlinks',
     'sphinx.ext.intersphinx',
     'sphinx.ext.todo',
     'sphinx.ext.coverage',
@@ -298,3 +299,8 @@ texinfo_documents = [
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {'python': ('https://docs.python.org/3/', None)}
+
+extlinks = {
+    "issue": ("https://github.com/pycqa/flake8/issues/%s", "#"),
+    "pull": ("https://github.com/pycqa/flake8/pull/%s", "#"),
+}

docs/source/release-notes/3.9.1.rst

@@ -0,0 +1,15 @@
+3.9.1 -- 2021-04-15
+-------------------
+
+You can view the `3.9.1 milestone`_ on GitHub for more details.
+
+Bugs Fixed
+~~~~~~~~~~
+
+- Fix codes being ignored by plugins utilizing ``extend_default_ignore`` (See
+  also :pull:`1317`)
+
+
+.. all links
+.. _3.9.1 milestone:
+    https://github.com/PyCQA/flake8/milestone/38

docs/source/release-notes/index.rst

@@ -9,6 +9,7 @@ with the newest releases first.
 ==================
 
 .. toctree::
+    3.9.1
     3.9.0
     3.8.4
     3.8.3