diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index f102a288..9026c214 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.155.0"
+  ".": "0.156.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 5b5d4a60..603f7b80 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-820e880c0c5a0a64c9370d6fa3f8d0f479c25f88ea3e2cec4d83ab6b40c9cebf.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-3ba84b9feb561355302af8e25d666f65a8a3f152f59dcb7dec57abcb99639d61.yml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index adef0ddf..461444fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.156.0 (2024-11-13)
+
+Full Changelog: [v0.155.0...v0.156.0](https://github.com/Increase/increase-python/compare/v0.155.0...v0.156.0)
+
+### Features
+
+* **api:** api update ([#814](https://github.com/Increase/increase-python/issues/814)) ([fea3d8a](https://github.com/Increase/increase-python/commit/fea3d8ae7604c9ef23fb902470f1c89fee0ac28d))
+
 ## 0.155.0 (2024-11-13)
 
 Full Changelog: [v0.154.0...v0.155.0](https://github.com/Increase/increase-python/compare/v0.154.0...v0.155.0)
diff --git a/pyproject.toml b/pyproject.toml
index 2abb64de..9630059f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.155.0"
+version = "0.156.0"
 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 73cc1820..b577f326 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__ = "0.155.0"  # x-release-please-version
+__version__ = "0.156.0"  # x-release-please-version
diff --git a/src/increase/types/card_payment.py b/src/increase/types/card_payment.py
index 9c870a16..f57add01 100644
--- a/src/increase/types/card_payment.py
+++ b/src/increase/types/card_payment.py
@@ -336,7 +336,7 @@ class ElementCardAuthorization(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -345,7 +345,7 @@ class ElementCardAuthorization(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str
@@ -746,7 +746,7 @@ class ElementCardDecline(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -755,7 +755,7 @@ class ElementCardDecline(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str
@@ -2486,7 +2486,7 @@ class ElementCardValidation(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -2495,7 +2495,7 @@ class ElementCardValidation(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str
diff --git a/src/increase/types/declined_transaction.py b/src/increase/types/declined_transaction.py
index c4390c73..61fb3539 100644
--- a/src/increase/types/declined_transaction.py
+++ b/src/increase/types/declined_transaction.py
@@ -383,7 +383,7 @@ class SourceCardDecline(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -392,7 +392,7 @@ class SourceCardDecline(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str
diff --git a/src/increase/types/pending_transaction.py b/src/increase/types/pending_transaction.py
index 59ac2e6e..ce9c2266 100644
--- a/src/increase/types/pending_transaction.py
+++ b/src/increase/types/pending_transaction.py
@@ -333,7 +333,7 @@ class SourceCardAuthorization(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -342,7 +342,7 @@ class SourceCardAuthorization(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str
diff --git a/src/increase/types/real_time_decision.py b/src/increase/types/real_time_decision.py
index 96147179..0cc3ef04 100644
--- a/src/increase/types/real_time_decision.py
+++ b/src/increase/types/real_time_decision.py
@@ -348,7 +348,7 @@ class CardAuthorization(BaseModel):
     is transacting with.
     """
 
-    merchant_category_code: Optional[str] = None
+    merchant_category_code: str
     """
     The Merchant Category Code (commonly abbreviated as MCC) of the merchant the
     card is transacting with.
@@ -357,7 +357,7 @@ class CardAuthorization(BaseModel):
     merchant_city: Optional[str] = None
     """The city the merchant resides in."""
 
-    merchant_country: Optional[str] = None
+    merchant_country: str
     """The country the merchant resides in."""
 
     merchant_descriptor: str