diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1d4f467..138e174 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.1-beta.2"
+  ".": "0.4.1-beta.3"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index e35fdaa..b505a44 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 14
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/miru-ml%2Fmiru-server-1187ba20c7bd5d91919c6e65f71201c9997541aae5ea6b3068b2e8094b4b8d0c.yml
 openapi_spec_hash: fd892348c3cd6e7ec5bdce4d8134bf14
-config_hash: c47912de5d58c4db1a9ed9e3f82a24a0
+config_hash: d9289b2cf60daedf64e567c87ab89594
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b88ab55..c3a0484 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.4.1-beta.3 (2025-10-05)
+
+Full Changelog: [v0.4.1-beta.2...v0.4.1-beta.3](https://github.com/miruml/python-server-sdk/compare/v0.4.1-beta.2...v0.4.1-beta.3)
+
+### Bug Fixes
+
+* **api:** expansions to use bracket format ([0344365](https://github.com/miruml/python-server-sdk/commit/03443654ab20a279be8594224358a15b746cfd01))
+
 ## 0.4.1-beta.2 (2025-10-05)
 
 Full Changelog: [v0.4.1-beta.1...v0.4.1-beta.2](https://github.com/miruml/python-server-sdk/compare/v0.4.1-beta.1...v0.4.1-beta.2)
diff --git a/pyproject.toml b/pyproject.toml
index 30d47cf..b555132 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "miru_server_sdk"
-version = "0.4.1-beta.2"
+version = "0.4.1-beta.3"
 description = "The official Python library for the miru API"
 dynamic = ["readme"]
 license = "MIT"
diff --git a/src/miru_server_sdk/_client.py b/src/miru_server_sdk/_client.py
index c5af8a2..1e214cb 100644
--- a/src/miru_server_sdk/_client.py
+++ b/src/miru_server_sdk/_client.py
@@ -162,7 +162,7 @@ def __init__(
     @property
     @override
     def qs(self) -> Querystring:
-        return Querystring(array_format="comma")
+        return Querystring(array_format="brackets")
 
     @property
     @override
@@ -383,7 +383,7 @@ def __init__(
     @property
     @override
     def qs(self) -> Querystring:
-        return Querystring(array_format="comma")
+        return Querystring(array_format="brackets")
 
     @property
     @override
diff --git a/src/miru_server_sdk/_version.py b/src/miru_server_sdk/_version.py
index 63a9751..8c2a4a6 100644
--- a/src/miru_server_sdk/_version.py
+++ b/src/miru_server_sdk/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "miru_server_sdk"
-__version__ = "0.4.1-beta.2"  # x-release-please-version
+__version__ = "0.4.1-beta.3"  # x-release-please-version