diff --git a/CHANGELOG.md b/CHANGELOG.md
index a885e10..a249452 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,18 @@ All notable changes to rattail-tempmon will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## v0.4.6 (2024-08-19)
+
+### Fix
+
+- avoid deprecated base class for config extension
+
+## v0.4.5 (2024-07-02)
+
+### Fix
+
+- fix signature for calls to `get_engines()`
+
 ## v0.4.4 (2024-07-02)
 
 ### Fix
diff --git a/README.rst b/README.md
similarity index 64%
rename from README.rst
rename to README.md
index 39651c1..979c915 100644
--- a/README.rst
+++ b/README.md
@@ -1,6 +1,5 @@
 
-rattail-tempmon
-===============
+# rattail-tempmon
 
 Rattail is a retail software framework, released under the GNU General Public
 License.
@@ -8,6 +7,5 @@ License.
 This is the ``rattail-tempmon`` package, which provides a database schema, and
 client/server daemons for recording and processing temperature data.
 
-Please see Rattail's `home page`_ for more information.
-
-.. _home page: https://rattailproject.org/
+Please see Rattail's [home page](https://rattailproject.org/) for more
+information.
diff --git a/pyproject.toml b/pyproject.toml
index 1b2f077..0e694fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,9 +6,9 @@ build-backend = "hatchling.build"
 
 [project]
 name = "rattail-tempmon"
-version = "0.4.4"
+version = "0.4.6"
 description = "Retail Software Framework - Temperature monitoring add-on"
-readme = "README.rst"
+readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
 license = {text = "GNU GPL v3+"}
 classifiers = [
@@ -30,8 +30,8 @@ dependencies = [
 
 [project.urls]
 Homepage = "https://rattailproject.org"
-Repository = "https://kallithea.rattailproject.org/rattail-project/rattail-tempmon"
-Changelog = "https://kallithea.rattailproject.org/rattail-project/rattail-tempmon/files/master/CHANGES.rst"
+Repository = "https://forgejo.wuttaproject.org/rattail/rattail-tempmon"
+Changelog = "https://forgejo.wuttaproject.org/rattail/rattail-tempmon/src/branch/master/CHANGELOG.md"
 
 
 [project.entry-points."rattail.config.extensions"]
diff --git a/rattail_tempmon/config.py b/rattail_tempmon/config.py
index 17034fc..a5f1333 100644
--- a/rattail_tempmon/config.py
+++ b/rattail_tempmon/config.py
@@ -25,12 +25,12 @@ Tempmon config extension
 """
 
 from wuttjamaican.db import get_engines
+from wuttjamaican.conf import WuttaConfigExtension
 
-from rattail.config import ConfigExtension
 from rattail_tempmon.db import Session
 
 
-class TempmonConfigExtension(ConfigExtension):
+class TempmonConfigExtension(WuttaConfigExtension):
     """
     Config extension for tempmon; adds tempmon DB engine/Session etc.  Expects
     something like this in your config:
@@ -52,10 +52,10 @@ class TempmonConfigExtension(ConfigExtension):
     def configure(self, config):
 
         # tempmon
-        config.tempmon_engines = get_engines(config, section='rattail_tempmon.db')
+        config.tempmon_engines = get_engines(config, 'rattail_tempmon.db')
         config.tempmon_engine = config.tempmon_engines.get('default')
         Session.configure(bind=config.tempmon_engine)
 
         # hotcooler
-        config.hotcooler_engines = get_engines(config, section='hotcooler.db')
+        config.hotcooler_engines = get_engines(config, 'hotcooler.db')
         config.hotcooler_engine = config.hotcooler_engines.get('default')