diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 354c2fa8..d2d60a3d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.23.1"
+  ".": "0.24.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23a7bd34..c0311a96 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.24.0 (2024-04-09)
+
+Full Changelog: [v0.23.1...v0.24.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.23.1...v0.24.0)
+
+### Features
+
+* **client:** add DefaultHttpxClient and DefaultAsyncHttpxClient ([#444](https://github.com/anthropics/anthropic-sdk-python/issues/444)) ([51d2427](https://github.com/anthropics/anthropic-sdk-python/commit/51d2427c0bb51cbd17d55f827da7fb9cc05f5d06))
+* **models:** add to_dict & to_json helper methods ([#446](https://github.com/anthropics/anthropic-sdk-python/issues/446)) ([6709f58](https://github.com/anthropics/anthropic-sdk-python/commit/6709f58d0980669100ea0b7935259d3c05cf9648))
+
 ## 0.23.1 (2024-04-04)
 
 Full Changelog: [v0.23.0...v0.23.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.23.0...v0.23.1)
diff --git a/pyproject.toml b/pyproject.toml
index 6a8eb94b..08f7ac58 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.23.1"
+version = "0.24.0"
 description = "The official Python library for the anthropic API"
 dynamic = ["readme"]
 license = "MIT"
diff --git a/src/anthropic/_version.py b/src/anthropic/_version.py
index 4815ab78..77cbefbe 100644
--- a/src/anthropic/_version.py
+++ b/src/anthropic/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "anthropic"
-__version__ = "0.23.1"  # x-release-please-version
+__version__ = "0.24.0"  # x-release-please-version