diff --git a/CHANGELOG.md b/CHANGELOG.md
index cec8c42e..39eebfee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,11 @@
 Changelog
 =========
 
-## TBD (Unreleased)
+## v4.9.1 (2026-06-18)
 
 ### Enhancements
 
 * Add support for `level` parameter in `BugsnagHandler` constructor and `Client.log_handler()` method.
-  Allows setting the minimum logging level during handler initialization.
-  Fully backward compatible - existing code continues to work unchanged.
-  [#249](https://github.com/bugsnag/bugsnag-python/pull/249)
 
 ## v4.9.0 (2026-04-21)
 
diff --git a/bugsnag/__init__.py b/bugsnag/__init__.py
index e9d93e08..925ae5b1 100644
--- a/bugsnag/__init__.py
+++ b/bugsnag/__init__.py
@@ -18,7 +18,7 @@
                             clear_feature_flag, clear_feature_flags,
                             aws_lambda_handler)
 
-__version__ = '4.9.0'
+__version__ = '4.9.1'
 
 __all__ = ('Client', 'Event', 'Configuration', 'RequestConfiguration',
            'configuration', 'configure', 'configure_request',
diff --git a/bugsnag/notifier.py b/bugsnag/notifier.py
index 426ab721..709088ad 100644
--- a/bugsnag/notifier.py
+++ b/bugsnag/notifier.py
@@ -1,5 +1,5 @@
 _NOTIFIER_INFORMATION = {
     'name': 'Python Bugsnag Notifier',
     'url': 'https://github.com/bugsnag/bugsnag-python',
-    'version': '4.9.0'
+    'version': '4.9.1'
 }
diff --git a/setup.py b/setup.py
index 68d2c745..be3e9477 100755
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
 
 setup(
     name='bugsnag',
-    version='4.9.0',
+    version='4.9.1',
     description='Automatic error monitoring for django, flask, etc.',
     long_description=__doc__,
     author='Simon Maynard',