diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 171e59a68..741f062e3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.367.0"
+  ".": "0.368.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 3af61a35c..09fe707d7 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 228
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-6fc6504fd01ec9082a1f98aedf474846382b0196143751c1cae21fb7651c7fd1.yml
-openapi_spec_hash: 7b2f1e569444dec8f4e02a26adf6eae0
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-4ecdf6d7ab918ac6bedd10130962aa92a2b10e59ca7a98849bcbb72878bffc92.yml
+openapi_spec_hash: cefa36c80b576364e72406d7da8c4610
 config_hash: eb2035151c7b49c2f12caf55469b8f9a
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 547b93ba4..46464b259 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.368.0 (2025-10-27)
+
+Full Changelog: [v0.367.0...v0.368.0](https://github.com/Increase/increase-python/compare/v0.367.0...v0.368.0)
+
+### Features
+
+* **api:** api update ([760f818](https://github.com/Increase/increase-python/commit/760f818a7d09397385fe3de0f0cc8cd623de28a1))
+
 ## 0.367.0 (2025-10-27)
 
 Full Changelog: [v0.366.0...v0.367.0](https://github.com/Increase/increase-python/compare/v0.366.0...v0.367.0)
diff --git a/pyproject.toml b/pyproject.toml
index b25636b6f..709246b5f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.367.0"
+version = "0.368.0"
 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 b72e4f696..a035b4468 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__ = "0.367.0"  # x-release-please-version
+__version__ = "0.368.0"  # x-release-please-version
diff --git a/src/increase/types/simulations/card_authorization_create_params.py b/src/increase/types/simulations/card_authorization_create_params.py
index 98cfa68fe..6907569dd 100644
--- a/src/increase/types/simulations/card_authorization_create_params.py
+++ b/src/increase/types/simulations/card_authorization_create_params.py
@@ -4,7 +4,13 @@
 
 from typing_extensions import Literal, Required, TypedDict
 
-__all__ = ["CardAuthorizationCreateParams", "NetworkDetails", "NetworkDetailsVisa", "ProcessingCategory"]
+__all__ = [
+    "CardAuthorizationCreateParams",
+    "NetworkDetails",
+    "NetworkDetailsVisa",
+    "ProcessingCategory",
+    "ProcessingCategoryRefund",
+]
 
 
 class CardAuthorizationCreateParams(TypedDict, total=False):
@@ -175,6 +181,11 @@ class NetworkDetails(TypedDict, total=False):
     """Fields specific to the Visa network."""
 
 
+class ProcessingCategoryRefund(TypedDict, total=False):
+    original_card_payment_id: str
+    """The card payment to link this refund to."""
+
+
 class ProcessingCategory(TypedDict, total=False):
     category: Required[
         Literal[
@@ -209,3 +220,6 @@ class ProcessingCategory(TypedDict, total=False):
     - `cash_disbursement` - Cash disbursement transactions are used to withdraw cash
       from an ATM or a point of sale.
     """
+
+    refund: ProcessingCategoryRefund
+    """Details related to refund authorizations."""
diff --git a/tests/api_resources/simulations/test_card_authorizations.py b/tests/api_resources/simulations/test_card_authorizations.py
index e75da86aa..4dd066d31 100644
--- a/tests/api_resources/simulations/test_card_authorizations.py
+++ b/tests/api_resources/simulations/test_card_authorizations.py
@@ -42,7 +42,10 @@ def test_method_create_with_all_params(self, client: Increase) -> None:
             network_details={"visa": {"stand_in_processing_reason": "issuer_error"}},
             network_risk_score=0,
             physical_card_id="physical_card_id",
-            processing_category={"category": "account_funding"},
+            processing_category={
+                "category": "account_funding",
+                "refund": {"original_card_payment_id": "original_card_payment_id"},
+            },
             terminal_id="x",
         )
         assert_matches_type(CardAuthorizationCreateResponse, card_authorization, path=["response"])
@@ -102,7 +105,10 @@ async def test_method_create_with_all_params(self, async_client: AsyncIncrease)
             network_details={"visa": {"stand_in_processing_reason": "issuer_error"}},
             network_risk_score=0,
             physical_card_id="physical_card_id",
-            processing_category={"category": "account_funding"},
+            processing_category={
+                "category": "account_funding",
+                "refund": {"original_card_payment_id": "original_card_payment_id"},
+            },
             terminal_id="x",
         )
         assert_matches_type(CardAuthorizationCreateResponse, card_authorization, path=["response"])