diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index c523ce1..c3c9552 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.8.0"
+  ".": "1.9.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c91d877..c5c182a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.9.0 (2024-10-04)
+
+Full Changelog: [v1.8.0...v1.9.0](https://github.com/julep-ai/python-sdk/compare/v1.8.0...v1.9.0)
+
+### Features
+
+* **api:** OpenAPI spec update via Stainless API ([#46](https://github.com/julep-ai/python-sdk/issues/46)) ([9ec3586](https://github.com/julep-ai/python-sdk/commit/9ec358673c6294b10b795a79659b315f12ec3043))
+
 ## 1.8.0 (2024-10-03)
 
 Full Changelog: [v1.7.0...v1.8.0](https://github.com/julep-ai/python-sdk/compare/v1.7.0...v1.8.0)
diff --git a/pyproject.toml b/pyproject.toml
index 792620a..3b7255c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "julep"
-version = "1.8.0"
+version = "1.9.0"
 description = "The official Python library for the julep API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/julep/_version.py b/src/julep/_version.py
index ecfb522..87839f5 100644
--- a/src/julep/_version.py
+++ b/src/julep/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "julep"
-__version__ = "1.8.0"  # x-release-please-version
+__version__ = "1.9.0"  # x-release-please-version