diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9009e56..ea9310a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to rattail-mailchimp 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).
 
+## v0.3.4 (2025-09-20)
+
+### Fix
+
+- fix config extension entry point
+- avoid deprecated base class for config extension
+
 ## v0.3.3 (2024-07-05)
 
 ### Fix
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5b17139
--- /dev/null
+++ b/README.md
@@ -0,0 +1,11 @@
+
+# rattail_mailchimp
+
+Rattail is a retail software framework, released under the GNU General
+Public License.
+
+This package contains software interfaces for the
+[MailChimp](https://mailchimp.com/) system.
+
+Please see the [Rattail Project](https://rattailproject.org/) for more
+information.
diff --git a/README.rst b/README.rst
deleted file mode 100644
index 25dc9c3..0000000
--- a/README.rst
+++ /dev/null
@@ -1,14 +0,0 @@
-
-rattail_mailchimp
-=================
-
-Rattail is a retail software framework, released under the GNU General
-Public License.
-
-This package contains software interfaces for the `MailChimp`_ system.
-
-.. _`MailChimp`: https://mailchimp.com/
-
-Please see the `Rattail Project`_ for more information.
-
-.. _`Rattail Project`: https://rattailproject.org/
diff --git a/pyproject.toml b/pyproject.toml
index cd0bf7e..a347ad6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,9 +6,9 @@ build-backend = "hatchling.build"
 
 [project]
 name = "rattail-mailchimp"
-version = "0.3.3"
+version = "0.3.4"
 description = "Rattail Software Interfaces for MailChimp"
-readme = "README.rst"
+readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
 license = {text = "GNU GPL v3+"}
 classifiers = [
@@ -30,7 +30,7 @@ dependencies = [
 ]
 
 
-[project.entry-points."rattail.config.extensions"]
+[project.entry-points."wutta.config.extensions"]
 rattail_mailchimp = "rattail_mailchimp.config:MailchimpConfigExtension"
 
 
@@ -44,8 +44,8 @@ rattail_mailchimp = "rattail_mailchimp.emails"
 
 [project.urls]
 Homepage = "https://rattailproject.org"
-Repository = "https://kallithea.rattailproject.org/rattail-project/rattail-mailchimp"
-Changelog = "https://kallithea.rattailproject.org/rattail-project/rattail-mailchimp/files/master/CHANGELOG.md"
+Repository = "https://forgejo.wuttaproject.org/rattail/rattail-mailchimp"
+Changelog = "https://forgejo.wuttaproject.org/rattail/rattail-mailchimp/src/branch/master/CHANGELOG.md"
 
 
 [tool.commitizen]
diff --git a/rattail_mailchimp/config.py b/rattail_mailchimp/config.py
index 9005b78..4bad837 100644
--- a/rattail_mailchimp/config.py
+++ b/rattail_mailchimp/config.py
@@ -24,10 +24,10 @@
 Config extensions for rattail-mailchimp
 """
 
-from rattail.config import ConfigExtension
+from wuttjamaican.conf import WuttaConfigExtension
 
 
-class MailchimpConfigExtension(ConfigExtension):
+class MailchimpConfigExtension(WuttaConfigExtension):
     """
     Config extension for rattail-mailchimp
     """