diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 24b1176fb1..7e4064260b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.56.0"
+  ".": "1.56.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 614dbb5795..ad4ea007e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 1.56.1 (2024-12-03)
+
+Full Changelog: [v1.56.0...v1.56.1](https://github.com/openai/openai-python/compare/v1.56.0...v1.56.1)
+
+### Bug Fixes
+
+* **cli:** remove usage of httpx proxies ([0e9fc3d](https://github.com/openai/openai-python/commit/0e9fc3dfbc7dec5b8c8f84dea9d87aad9f3d9cf6))
+
+
+### Chores
+
+* **internal:** bump pyright ([#1917](https://github.com/openai/openai-python/issues/1917)) ([0e87346](https://github.com/openai/openai-python/commit/0e8734637666ab22bc27fe4ec2cf7c39fddb5d08))
+
 ## 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)
diff --git a/pyproject.toml b/pyproject.toml
index b5cf535fe5..93ababf9b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "1.56.0"
+version = "1.56.1"
 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 4d0ab191a4..c8e74372aa 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -125,7 +125,7 @@ pygments==2.18.0
     # via rich
 pyjwt==2.8.0
     # via msal
-pyright==1.1.380
+pyright==1.1.389
 pytest==8.3.3
     # via pytest-asyncio
 pytest-asyncio==0.24.0
@@ -179,6 +179,7 @@ typing-extensions==4.12.2
     # via openai
     # via pydantic
     # via pydantic-core
+    # via pyright
 tzdata==2024.1
     # via pandas
 urllib3==2.2.1
diff --git a/src/openai/_version.py b/src/openai/_version.py
index 8561c9379b..c879d22094 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__ = "1.56.0"  # x-release-please-version
+__version__ = "1.56.1"  # x-release-please-version
diff --git a/src/openai/cli/_cli.py b/src/openai/cli/_cli.py
index 72e5c923bd..fd165f48ab 100644
--- a/src/openai/cli/_cli.py
+++ b/src/openai/cli/_cli.py
@@ -15,7 +15,6 @@
 from .. import _ApiType, __version__
 from ._api import register_commands
 from ._utils import can_use_http2
-from .._types import ProxiesDict
 from ._errors import CLIError, display_error
 from .._compat import PYDANTIC_V2, ConfigDict, model_parse
 from .._models import BaseModel
@@ -167,17 +166,17 @@ def _main() -> None:
     if args.verbosity != 0:
         sys.stderr.write("Warning: --verbosity isn't supported yet\n")
 
-    proxies: ProxiesDict = {}
+    proxies: dict[str, httpx.BaseTransport] = {}
     if args.proxy is not None:
         for proxy in args.proxy:
             key = "https://" if proxy.startswith("https") else "http://"
             if key in proxies:
                 raise CLIError(f"Multiple {key} proxies given - only the last one would be used")
 
-            proxies[key] = proxy
+            proxies[key] = httpx.HTTPTransport(proxy=httpx.Proxy(httpx.URL(proxy)))
 
     http_client = httpx.Client(
-        proxies=proxies or None,
+        mounts=proxies or None,
         http2=can_use_http2(),
     )
     openai.http_client = http_client