diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 3794816acd..4a5d7b25e2 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.57.0"
+  ".": "1.57.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5baf5ab80..b436c25abf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.57.1 (2024-12-09)
+
+Full Changelog: [v1.57.0...v1.57.1](https://github.com/openai/openai-python/compare/v1.57.0...v1.57.1)
+
+### Chores
+
+* **internal:** bump pydantic dependency ([#1929](https://github.com/openai/openai-python/issues/1929)) ([5227c95](https://github.com/openai/openai-python/commit/5227c95eff9c7b1395e6d8f14b94652a91ed2ee2))
+
 ## 1.57.0 (2024-12-05)
 
 Full Changelog: [v1.56.2...v1.57.0](https://github.com/openai/openai-python/compare/v1.56.2...v1.57.0)
diff --git a/pyproject.toml b/pyproject.toml
index c488c40622..9a92574c73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "1.57.0"
+version = "1.57.1"
 description = "The official Python library for the openai API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/requirements-dev.lock b/requirements-dev.lock
index c8e74372aa..d7ecc4fcda 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -7,7 +7,6 @@
 #   all-features: true
 #   with-sources: false
 #   generate-hashes: false
-#   universal: false
 
 -e file:.
 annotated-types==0.6.0
@@ -117,9 +116,9 @@ portalocker==2.10.1
     # via msal-extensions
 pycparser==2.22
     # via cffi
-pydantic==2.9.2
+pydantic==2.10.3
     # via openai
-pydantic-core==2.23.4
+pydantic-core==2.27.1
     # via pydantic
 pygments==2.18.0
     # via rich
diff --git a/requirements.lock b/requirements.lock
index aef8bc0a9a..826f0bc927 100644
--- a/requirements.lock
+++ b/requirements.lock
@@ -7,7 +7,6 @@
 #   all-features: true
 #   with-sources: false
 #   generate-hashes: false
-#   universal: false
 
 -e file:.
 annotated-types==0.6.0
@@ -41,9 +40,9 @@ pandas==2.2.3
     # via openai
 pandas-stubs==2.2.2.240807
     # via openai
-pydantic==2.9.2
+pydantic==2.10.3
     # via openai
-pydantic-core==2.23.4
+pydantic-core==2.27.1
     # via pydantic
 python-dateutil==2.9.0.post0
     # via pandas
diff --git a/src/openai/_types.py b/src/openai/_types.py
index c8f4d5a922..a5cf207aa3 100644
--- a/src/openai/_types.py
+++ b/src/openai/_types.py
@@ -194,10 +194,8 @@ def get(self, __key: str) -> str | None: ...
 StrBytesIntFloat = Union[str, bytes, int, float]
 
 # Note: copied from Pydantic
-# https://github.com/pydantic/pydantic/blob/32ea570bf96e84234d2992e1ddf40ab8a565925a/pydantic/main.py#L49
-IncEx: TypeAlias = Union[
-    Set[int], Set[str], Mapping[int, Union["IncEx", Literal[True]]], Mapping[str, Union["IncEx", Literal[True]]]
-]
+# https://github.com/pydantic/pydantic/blob/6f31f8f68ef011f84357330186f603ff295312fd/pydantic/main.py#L79
+IncEx: TypeAlias = Union[Set[int], Set[str], Mapping[int, Union["IncEx", bool]], Mapping[str, Union["IncEx", bool]]]
 
 PostParser = Callable[[Any], Any]
 
diff --git a/src/openai/_version.py b/src/openai/_version.py
index 58e2de3bd5..a59207d618 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__ = "1.57.0"  # x-release-please-version
+__version__ = "1.57.1"  # x-release-please-version