diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1ef8c632ae..84be15d4a5 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.35.8"
+  ".": "1.35.9"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e40cafda7..86f391bb43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.35.9 (2024-07-02)
+
+Full Changelog: [v1.35.8...v1.35.9](https://github.com/openai/openai-python/compare/v1.35.8...v1.35.9)
+
+### Bug Fixes
+
+* **client:** always respect content-type multipart/form-data if provided ([#1519](https://github.com/openai/openai-python/issues/1519)) ([6da55e1](https://github.com/openai/openai-python/commit/6da55e10c4ba8c78687baedc68d5599ea120d05c))
+
 ## 1.35.8 (2024-07-02)
 
 Full Changelog: [v1.35.7...v1.35.8](https://github.com/openai/openai-python/compare/v1.35.7...v1.35.8)
diff --git a/pyproject.toml b/pyproject.toml
index ea1f76bf42..be7a95dd69 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "1.35.8"
+version = "1.35.9"
 description = "The official Python library for the openai API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/openai/_version.py b/src/openai/_version.py
index c612421e90..0a534db76c 100644
--- a/src/openai/_version.py
+++ b/src/openai/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "openai"
-__version__ = "1.35.8"  # x-release-please-version
+__version__ = "1.35.9"  # x-release-please-version