diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b9e06599..c032d311 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.21.0"
+  ".": "4.22.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 05461dff..fd40002f 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 118
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-b330498c2bfb80605f4c406e8b228c0a4ece85247b21f62f93273a00abb53d35.yml
-openapi_spec_hash: 16a82d0eb23b68218d584e385bee43da
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-26020bd285825dac04bf642a414ea07c786fc6e42ee6bbcf795e11f8db426519.yml
+openapi_spec_hash: 897fedec83f0960539b3aa4ec0e3308d
 config_hash: 1f73a949b649ecfe6ec68ba1bb459dc2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2057a0c4..7a9e9f72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 4.22.0 (2025-10-03)
+
+Full Changelog: [v4.21.0...v4.22.0](https://github.com/orbcorp/orb-python/compare/v4.21.0...v4.22.0)
+
+### Features
+
+* **api:** api update ([0ba0771](https://github.com/orbcorp/orb-python/commit/0ba077178e0df6d4867bda25c3fe2a747fb678ec))
+
 ## 4.21.0 (2025-10-03)
 
 Full Changelog: [v4.20.0...v4.21.0](https://github.com/orbcorp/orb-python/compare/v4.20.0...v4.21.0)
diff --git a/pyproject.toml b/pyproject.toml
index 4f52ae7e..4ece3be5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "orb-billing"
-version = "4.21.0"
+version = "4.22.0"
 description = "The official Python library for the orb API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/orb/_version.py b/src/orb/_version.py
index a9183a2e..bb7f9619 100644
--- a/src/orb/_version.py
+++ b/src/orb/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "orb"
-__version__ = "4.21.0"  # x-release-please-version
+__version__ = "4.22.0"  # x-release-please-version
diff --git a/src/orb/types/shared/matrix_sub_line_item.py b/src/orb/types/shared/matrix_sub_line_item.py
index 232ad73f..3658b878 100644
--- a/src/orb/types/shared/matrix_sub_line_item.py
+++ b/src/orb/types/shared/matrix_sub_line_item.py
@@ -23,3 +23,6 @@ class MatrixSubLineItem(BaseModel):
     quantity: float
 
     type: Literal["matrix"]
+
+    scaled_quantity: Optional[float] = None
+    """The scaled quantity for this line item for specific pricing structures"""