diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2ba52d0aa..bfd395f2e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.309.0"
+  ".": "0.310.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 7d655a6dd..76d80ce71 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 216
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-7d240ad280fc9ed22a8bbe219835ed737b075963291d84b75efbbb38195eff8b.yml
-openapi_spec_hash: f2a2cad4f01bf5ab66e1f3dcb719315a
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-a3db5141ad8a06aca3ec4fbc0a4414af61ffea1bbd6470b4a9ad13f8b24ed9eb.yml
+openapi_spec_hash: 1192108447914f9233f6e0933dd36033
 config_hash: 632b628b59d8f0b717153b3d8133f6cb
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a448d934..ecfad95a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.310.0 (2025-08-29)
+
+Full Changelog: [v0.309.0...v0.310.0](https://github.com/Increase/increase-python/compare/v0.309.0...v0.310.0)
+
+### Features
+
+* **api:** api update ([b151146](https://github.com/Increase/increase-python/commit/b151146cbf7f6af36b2a6937176d40770f115fb7))
+
 ## 0.309.0 (2025-08-29)
 
 Full Changelog: [v0.308.0...v0.309.0](https://github.com/Increase/increase-python/compare/v0.308.0...v0.309.0)
diff --git a/pyproject.toml b/pyproject.toml
index 022bc15f1..7a02658b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.309.0"
+version = "0.310.0"
 description = "The official Python library for the increase API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/increase/_version.py b/src/increase/_version.py
index e5e6d8737..5eb1d6f3a 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__ = "0.309.0"  # x-release-please-version
+__version__ = "0.310.0"  # x-release-please-version
diff --git a/src/increase/types/transaction.py b/src/increase/types/transaction.py
index 1cbc7e0ff..3439507df 100644
--- a/src/increase/types/transaction.py
+++ b/src/increase/types/transaction.py
@@ -2081,6 +2081,16 @@ class SourceInboundWireReversal(BaseModel):
     return_reason_additional_information: Optional[str] = None
     """Additional information about the reason for the reversal."""
 
+    return_reason_code: Optional[str] = None
+    """A code provided by the sending bank giving a reason for the reversal.
+
+    It will generally be one of the codes defined in the ISO20022
+    `ExternalReturnReason1Code` code set, but this is not enforced by the network.
+    """
+
+    return_reason_code_description: Optional[str] = None
+    """An Increase-generated description of the `return_reason_code`."""
+
     transaction_id: str
     """The ID for the Transaction associated with the transfer reversal."""
 
diff --git a/src/increase/types/wire_transfer.py b/src/increase/types/wire_transfer.py
index be58bd9e8..8b3de1ebf 100644
--- a/src/increase/types/wire_transfer.py
+++ b/src/increase/types/wire_transfer.py
@@ -123,6 +123,16 @@ class Reversal(BaseModel):
     return_reason_additional_information: Optional[str] = None
     """Additional information about the reason for the reversal."""
 
+    return_reason_code: Optional[str] = None
+    """A code provided by the sending bank giving a reason for the reversal.
+
+    It will generally be one of the codes defined in the ISO20022
+    `ExternalReturnReason1Code` code set, but this is not enforced by the network.
+    """
+
+    return_reason_code_description: Optional[str] = None
+    """An Increase-generated description of the `return_reason_code`."""
+
     transaction_id: str
     """The ID for the Transaction associated with the transfer reversal."""