diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01124b6..3c64672 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,15 +1,18 @@
 # Changelog
 
-## [Unreleased](https://github.com/openfga/python-sdk/compare/v0.9.8...HEAD)
+## [Unreleased](https://github.com/openfga/python-sdk/compare/v0.9.9...HEAD)
 
-### [0.9.8](https://github.com/openfga/python-sdk/compare/v0.9.7...0.9.8) (2025-11-04)
+### [0.9.9](https://github.com/openfga/python-sdk/compare/v0.9.8...v0.9.9) (2025-12-09)
+- feat: improve error messaging (#245)
+
+### [0.9.8](https://github.com/openfga/python-sdk/compare/v0.9.7...v0.9.8) (2025-11-04)
 - feat: add support for conflict options for Write operations: (#235)
   The client now supports setting `ConflictOptions` on `ClientWriteOptions` to control behavior when writing duplicate tuples or deleting non-existent tuples. This feature requires OpenFGA server [v1.10.0](https://github.com/openfga/openfga/releases/tag/v1.10.0) or later.
   See [Conflict Options for Write Operations](./README.md#conflict-options-for-write-operations) for more.
   - `on_duplicate` for handling duplicate tuple writes (ERROR or IGNORE)
   - `on_missing` for handling deletes of non-existent tuples (ERROR or IGNORE)
 
-### [0.9.7](https://github.com/openfga/python-sdk/compare/v0.9.6...0.9.7) (2025-10-06)
+### [0.9.7](https://github.com/openfga/python-sdk/compare/v0.9.6...v0.9.7) (2025-10-06)
 
 - feat: `headers` configuration property (#233)
 - fix: per-request custom header precedence (#230)
diff --git a/README.md b/README.md
index 2f81122..1222ccc 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Python SDK for OpenFGA
 
 [![pypi](https://img.shields.io/pypi/v/openfga_sdk.svg?style=flat)](https://pypi.org/project/openfga_sdk)
-[![Socket Badge](https://badge.socket.dev/pypi/package/openfga-sdk/0.9.8](https://socket.dev/pypi/package/openfga-sdk)
+[![Socket Badge](https://badge.socket.dev/pypi/package/openfga-sdk/0.9.9](https://socket.dev/pypi/package/openfga-sdk)
 [![DeepWiki](https://img.shields.io/badge/DeepWiki-openfga%2Fpython--sdk-blue.svg?logo=data:image/png;base64,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)](https://deepwiki.com/openfga/python-sdk)
 [![Release](https://img.shields.io/github/v/release/openfga/python-sdk?sort=semver&color=green)](https://github.com/openfga/python-sdk/releases)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fopenfga%2Fpython-sdk.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fopenfga%2Fpython-sdk?ref=badge_shield)
diff --git a/VERSION.txt b/VERSION.txt
index e3e1807..7e310ba 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-0.9.8
+0.9.9
diff --git a/example/example1/requirements.txt b/example/example1/requirements.txt
index 0a9f181..52047eb 100644
--- a/example/example1/requirements.txt
+++ b/example/example1/requirements.txt
@@ -4,7 +4,7 @@ attrs >= 25.3.0
 frozenlist >= 1.7.0
 idna >= 3.10
 multidict >= 6.6.4
-openfga-sdk >= 0.9.8
+openfga-sdk >= 0.9.9
 python-dateutil >= 2.9.0.post0
 urllib3 >= 1.26.19, != 2.0.*, != 2.1.*, != 2.2.0, != 2.2.1, < 3
 yarl >= 1.20.1
diff --git a/example/example1/setup.py b/example/example1/setup.py
index 248c51b..88b0377 100644
--- a/example/example1/setup.py
+++ b/example/example1/setup.py
@@ -15,7 +15,7 @@
 
 NAME = "example1"
 VERSION = "0.0.1"
-REQUIRES = ["openfga-sdk >= 0.9.8"]
+REQUIRES = ["openfga-sdk >= 0.9.9"]
 
 setup(
     name=NAME,
diff --git a/openfga_sdk/constants.py b/openfga_sdk/constants.py
index 8c67d47..3d9a113 100644
--- a/openfga_sdk/constants.py
+++ b/openfga_sdk/constants.py
@@ -14,10 +14,10 @@
 
 
 # Version of the OpenFGA Python SDK.
-SDK_VERSION: Final[str] = "0.9.8"
+SDK_VERSION: Final[str] = "0.9.9"
 
 # User agent used in HTTP requests.
-USER_AGENT: Final[str] = "openfga-sdk python/0.9.8"
+USER_AGENT: Final[str] = "openfga-sdk python/0.9.9"
 
 # Example API domain for documentation/tests.
 SAMPLE_BASE_DOMAIN: Final[str] = "fga.example"
diff --git a/pyproject.toml b/pyproject.toml
index 574fc73..75fcbf5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@
 
 [project]
 name = "openfga-sdk"
-version = "0.9.8"
+version = "0.9.9"
 description="A high performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar."
 authors = [
     { name = "OpenFGA (https://openfga.dev)", email = "community@openfga.dev"}
diff --git a/uv.lock b/uv.lock
index 7ba785b..4b52fbe 100644
--- a/uv.lock
+++ b/uv.lock
@@ -662,7 +662,7 @@ wheels = [
 
 [[package]]
 name = "openfga-sdk"
-version = "0.9.8"
+version = "0.9.9"
 source = { editable = "." }
 dependencies = [
     { name = "aiohttp" },