diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6d78745c..05988747 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.9.0"
+  ".": "0.9.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c260616f..8e4bdefc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.9.1 (2024-01-15)
+
+Full Changelog: [v0.9.0...v0.9.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.9.0...v0.9.1)
+
+### Chores
+
+* **client:** improve debug logging for failed requests ([#303](https://github.com/anthropics/anthropic-sdk-python/issues/303)) ([5e58c25](https://github.com/anthropics/anthropic-sdk-python/commit/5e58c2537eccadbccef9aadcd6433cf35328e678))
+
+
+### Documentation
+
+* **readme:** improve api reference ([#306](https://github.com/anthropics/anthropic-sdk-python/issues/306)) ([c3ab836](https://github.com/anthropics/anthropic-sdk-python/commit/c3ab836e4654dff259f19071bf0e1cdff249a268))
+
 ## 0.9.0 (2024-01-08)
 
 Full Changelog: [v0.8.1...v0.9.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.8.1...v0.9.0)
diff --git a/pyproject.toml b/pyproject.toml
index 8a119ed8..a7644f37 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.9.0"
+version = "0.9.1"
 description = "The official Python library for the anthropic API"
 readme = "README.md"
 license = "MIT"
diff --git a/src/anthropic/_version.py b/src/anthropic/_version.py
index 17bb7b81..a0546c99 100644
--- a/src/anthropic/_version.py
+++ b/src/anthropic/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless.
 
 __title__ = "anthropic"
-__version__ = "0.9.0"  # x-release-please-version
+__version__ = "0.9.1"  # x-release-please-version