diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d23d0104a4..24b1176fb1 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.55.3"
+  ".": "1.56.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 866d34cb4f..614dbb5795 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.56.0 (2024-12-02)
+
+Full Changelog: [v1.55.3...v1.56.0](https://github.com/openai/openai-python/compare/v1.55.3...v1.56.0)
+
+### Features
+
+* **client:** make ChatCompletionStreamState public ([#1898](https://github.com/openai/openai-python/issues/1898)) ([dc7f6cb](https://github.com/openai/openai-python/commit/dc7f6cb2618686ff04bfdca228913cda3d320884))
+
 ## 1.55.3 (2024-11-28)
 
 Full Changelog: [v1.55.2...v1.55.3](https://github.com/openai/openai-python/compare/v1.55.2...v1.55.3)
diff --git a/pyproject.toml b/pyproject.toml
index 06c0e7fd73..b5cf535fe5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "1.55.3"
+version = "1.56.0"
 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 c6d4c88a6d..8561c9379b 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__ = "1.55.3"  # x-release-please-version
+__version__ = "1.56.0"  # x-release-please-version