diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index ef7a1f97..bc66e223 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.165.1"
+  ".": "0.166.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 61aabba3..bf1915dc 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 199
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-5fb150851a7b999aa231fd826e5365716f9c7d487a3fc1bb0a9df65bdfdfeca3.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-120670f0bcb7ab318b5b09e639e25e243d2cb7a630a27aebb4f94395b1fc337b.yml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35e4ffc1..ed9e403b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## 0.166.0 (2024-12-04)
+
+Full Changelog: [v0.165.1...v0.166.0](https://github.com/Increase/increase-python/compare/v0.165.1...v0.166.0)
+
+### Features
+
+* **api:** api update ([#857](https://github.com/Increase/increase-python/issues/857)) ([d57f9f2](https://github.com/Increase/increase-python/commit/d57f9f2c3df5e7fd69cba167d259d535989bddd5))
+
+
+### Chores
+
+* **internal:** bump pyright ([#854](https://github.com/Increase/increase-python/issues/854)) ([9864983](https://github.com/Increase/increase-python/commit/9864983dea855e3020afd63004a52cb0fc8c8697))
+* make the `Omit` type public ([#856](https://github.com/Increase/increase-python/issues/856)) ([b194c78](https://github.com/Increase/increase-python/commit/b194c784d2209ea7b5e7473a33c9d72f78a836b3))
+
 ## 0.165.1 (2024-11-28)
 
 Full Changelog: [v0.165.0...v0.165.1](https://github.com/Increase/increase-python/compare/v0.165.0...v0.165.1)
diff --git a/pyproject.toml b/pyproject.toml
index 1eb95e68..5256f366 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.165.1"
+version = "0.166.0"
 description = "The official Python library for the increase API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/requirements-dev.lock b/requirements-dev.lock
index f26949ee..8e2af7ec 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -68,7 +68,7 @@ pydantic-core==2.23.4
     # via pydantic
 pygments==2.18.0
     # via rich
-pyright==1.1.380
+pyright==1.1.389
 pytest==8.3.3
     # via pytest-asyncio
 pytest-asyncio==0.24.0
@@ -97,6 +97,7 @@ typing-extensions==4.12.2
     # via mypy
     # via pydantic
     # via pydantic-core
+    # via pyright
 virtualenv==20.24.5
     # via nox
 zipp==3.17.0
diff --git a/src/increase/__init__.py b/src/increase/__init__.py
index 519cb0b5..3e9191eb 100644
--- a/src/increase/__init__.py
+++ b/src/increase/__init__.py
@@ -1,7 +1,7 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 from . import types
-from ._types import NOT_GIVEN, NoneType, NotGiven, Transport, ProxiesTypes
+from ._types import NOT_GIVEN, Omit, NoneType, NotGiven, Transport, ProxiesTypes
 from ._utils import file_from_path
 from ._client import (
     ENVIRONMENTS,
@@ -58,6 +58,7 @@
     "ProxiesTypes",
     "NotGiven",
     "NOT_GIVEN",
+    "Omit",
     "IncreaseError",
     "APIError",
     "APIStatusError",
diff --git a/src/increase/_version.py b/src/increase/_version.py
index 4e2aeb6c..34fb8ca2 100644
--- a/src/increase/_version.py
+++ b/src/increase/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "increase"
-__version__ = "0.165.1"  # x-release-please-version
+__version__ = "0.166.0"  # x-release-please-version
diff --git a/src/increase/types/real_time_payments_transfer.py b/src/increase/types/real_time_payments_transfer.py
index 1ad2cee2..eec89c8f 100644
--- a/src/increase/types/real_time_payments_transfer.py
+++ b/src/increase/types/real_time_payments_transfer.py
@@ -8,6 +8,7 @@
 
 __all__ = [
     "RealTimePaymentsTransfer",
+    "Acknowledgement",
     "Approval",
     "Cancellation",
     "CreatedBy",
@@ -19,6 +20,11 @@
 ]
 
 
+class Acknowledgement(BaseModel):
+    acknowledged_at: datetime
+    """When the transfer was acknowledged."""
+
+
 class Approval(BaseModel):
     approved_at: datetime
     """
@@ -192,6 +198,12 @@ class RealTimePaymentsTransfer(BaseModel):
     account_id: str
     """The Account from which the transfer was sent."""
 
+    acknowledgement: Optional[Acknowledgement] = None
+    """
+    If the transfer is acknowledged by the recipient bank, this will contain
+    supplemental details.
+    """
+
     amount: int
     """The transfer amount in USD cents."""