diff --git a/NEWS.rst b/NEWS.rst
index bf34a803..1fe5165f 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -1,8 +1,8 @@
 NEWS
 ====
 
-NEXT
-----
+23.12.0 - 2023-12-22
+--------------------
 
  * Fixed a compatibility issue with Werkzeug versions greater than 2.2. [`#575 <https://github.com/twisted/klein/pull/575>`]
  * Added explicit support for Python 3.10 and 3.11, although in practice they did work previously in 21.8. [`#578 <https://github.com/twisted/klein/pull/578>`]
diff --git a/docs/release.rst b/docs/release.rst
index 2cc895f7..50db4648 100644
--- a/docs/release.rst
+++ b/docs/release.rst
@@ -13,10 +13,22 @@ Releasing Klein
 
 #. Start with a clean (no changes) source tree on the trunk branch.
 #. Create a new release candidate: :code:`tox -e release -- start`
+#. Manually update the ``NEXT`` heading in ``NEWS.rst`` to reference the
+   version that was just updated, *without* the "rc" release-candidate tag, and
+   the current RFC3339-formatted date; i.e. write the ``NEWS.rst`` file as if
+   it were for the final release.
 #. Commit and push the branch
 #. Open a PR from the branch (follow the usual process for opening a PR).
-#. As appropriate, pull the latest code from :code:`trunk`: :code:`git checkout trunk && git pull --rebase` (or use the GitHub UI)
-#. To publish a release candidate to PyPI: :code:`tox -e release -- publish`
+#. As appropriate, pull the latest code from :code:`trunk`: :code:`git checkout
+   trunk && git pull --rebase` (or use the GitHub UI)
+#. To publish a release candidate to PyPI: :code:`tox -e release -- publish --candidate`
 #. Obtain an approving review for the PR using the usual process.
-#. To publish a production release: :code:`tox -e release -- publish --final`
+#. If the date has changed since the release candidate, update the RFC3339 date
+   in the ``NEWS.rst`` header for the release to the current date; commit and
+   push this change to the branch.
+#. Publish a production release with the command: :code:`tox -e release --
+   publish --final`
+#. In ``NEWS.rst``, add a new "NEXT" section at the top.  You do not need a
+   separate review for this addition; it should be done after the release, but
+   before merging to trunk.
 #. Merge the PR to the trunk branch.
diff --git a/release.py b/release.py
index 958d876d..0116c388 100644
--- a/release.py
+++ b/release.py
@@ -66,7 +66,7 @@ def fadeToBlack() -> None:
     """
     Run black to reformat the source code.
     """
-    spawn(["tox", "-e", "black-reformat"])
+    spawn(["pre-commit", "run", "black"])
 
 
 def incrementVersion(candidate: bool) -> None:
@@ -77,7 +77,7 @@ def incrementVersion(candidate: bool) -> None:
     """
     # Incremental doesn't have an API to do this, so we have to run a
     # subprocess. Boo.
-    args = ["python", "-m", "incremental.update", "klein"]
+    args = ["python", "-m", "incremental.update", "Klein"]
     if candidate:
         args.append("--rc")
     spawn(args)
@@ -263,11 +263,10 @@ def publishRelease(final: bool, test: bool = False) -> None:
             1,
         )
 
-    incrementVersion(candidate=False)
+    incrementVersion(candidate=not final)
     version = currentVersion()
 
-    versonFile = Path(__file__).parent / "src" / "klein" / "_version.py"
-    repository.index.add(str(versonFile))
+    repository.index.add("src/klein")
     repository.index.commit(f"Update version to {version}")
 
     tagName = releaseTagName(version)
@@ -308,10 +307,14 @@ def bump() -> None:
 
 @main.command()
 @commandOption(
-    "--test/--production", help="Use test (or production) PyPI server"
+    "--test/--production",
+    help="Use test (or production) PyPI server",
+    default=False,
 )
 @commandOption(
-    "--final/--candidate", help="Publish a final (or candidate) release"
+    "--final/--candidate",
+    help="Publish a final (or candidate) release",
+    default=False,
 )
 def publish(final: bool, test: bool) -> None:
     publishRelease(final=final, test=test)
diff --git a/src/klein/_dihttp.py b/src/klein/_dihttp.py
index 10008f43..0e7a7807 100644
--- a/src/klein/_dihttp.py
+++ b/src/klein/_dihttp.py
@@ -47,7 +47,7 @@ class RequestURL:
     """
     Require a hyperlink L{DecodedURL} object from a L{Requirer}.
 
-    @since: Klein NEXT
+    @since: Klein 23.12.0
     """
 
     @classmethod
@@ -80,7 +80,7 @@ class RequestComponent:
     """
     Require a hyperlink L{DecodedURL} object from a L{Requirer}.
 
-    @since: Klein NEXT
+    @since: Klein 23.12.0
     """
 
     interface: Type[Interface]
@@ -120,7 +120,7 @@ class Response:
         - a body object, which can be anything else Klein understands; for
           example, an IResource, an IRenderable, str, bytes, etc.
 
-    @since: Klein NEXT
+    @since: Klein 23.12.0
     """
 
     code: int = 200
diff --git a/src/klein/_version.py b/src/klein/_version.py
index ffaf0d69..0cf808cf 100644
--- a/src/klein/_version.py
+++ b/src/klein/_version.py
@@ -1,11 +1,11 @@
 """
-Provides klein version information.
+Provides Klein version information.
 """
 
 # This file is auto-generated! Do not edit!
-# Use `python -m incremental.update klein` to change this file.
+# Use `python -m incremental.update Klein` to change this file.
 
 from incremental import Version
 
-__version__ = Version("klein", 23, 5, 0)
+__version__ = Version("Klein", 23, 12, 0)
 __all__ = ["__version__"]