diff --git a/checkout_lifecycle_test.py b/checkout_lifecycle_test.py
index 44bba18..d738135 100644
--- a/checkout_lifecycle_test.py
+++ b/checkout_lifecycle_test.py
@@ -30,10 +30,10 @@
 )
 from ucp_sdk.models.schemas.shopping.types import (
   fulfillment_method_update_request,
+  item_update_request,
+  line_item_update_request,
+  shipping_destination_update_request,
 )
-from ucp_sdk.models.schemas.shopping.types import item_update_request
-from ucp_sdk.models.schemas.shopping.types import line_item_update_request
-from ucp_sdk.models.schemas.shopping.types import shipping_destination
 
 # Rebuild models to resolve forward references
 checkout.Checkout.model_rebuild(_types_namespace={"Payment": Payment})
@@ -126,13 +126,15 @@ def test_update_checkout(self):
       phone_number="+15555555556",
     )
 
-    new_destination = shipping_destination.ShippingDestination(
-      id="dest_2",
-      address_country="US",
-      postal_code="90210",
-      locality="Beverly Hills",
-      region="CA",
-      street_address="456 Elm St",
+    new_destination = (
+      shipping_destination_update_request.ShippingDestinationUpdateRequest(
+        id="dest_2",
+        address_country="US",
+        postal_code="90210",
+        locality="Beverly Hills",
+        region="CA",
+        street_address="456 Elm St",
+      )
     )
 
     existing_method = checkout_obj.fulfillment["methods"][0]
diff --git a/integration_test_utils.py b/integration_test_utils.py
index 826a018..f3368ab 100644
--- a/integration_test_utils.py
+++ b/integration_test_utils.py
@@ -48,7 +48,9 @@
 from ucp_sdk.models.schemas.shopping.types import line_item_create_request
 from ucp_sdk.models.schemas.shopping.types import line_item_update_request
 from ucp_sdk.models.schemas import payment_handler
-from ucp_sdk.models.schemas.shopping.types import shipping_destination
+from ucp_sdk.models.schemas.shopping.types import (
+  shipping_destination_create_request,
+)
 import uvicorn
 
 
@@ -889,15 +891,19 @@ def create_checkout_payload(
     if include_fulfillment:
       # Hierarchical Fulfillment Construction using dynamic destination
       dest_data = ctx.get_test_destination()
-      destination = shipping_destination.ShippingDestination(
-        id="dest_1",
-        address_country=dest_data.get(
-          "address_country", dest_data.get("country", "US")
-        ),
-        postal_code=dest_data.get("postal_code", "94105"),
-        locality=dest_data.get("locality", dest_data.get("city")),
-        region=dest_data.get("region", dest_data.get("state")),
-        street_address=dest_data.get("street_address", dest_data.get("street")),
+      destination = (
+        shipping_destination_create_request.ShippingDestinationCreateRequest(
+          id="dest_1",
+          address_country=dest_data.get(
+            "address_country", dest_data.get("country", "US")
+          ),
+          postal_code=dest_data.get("postal_code", "94105"),
+          locality=dest_data.get("locality", dest_data.get("city")),
+          region=dest_data.get("region", dest_data.get("state")),
+          street_address=dest_data.get(
+            "street_address", dest_data.get("street")
+          ),
+        )
       )
       group = fulfillment_group_create_request.FulfillmentGroupCreateRequest(
         id="group_1",
diff --git a/pyproject.toml b/pyproject.toml
index 1eca52d..c5787c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ dependencies = [
     "absl-py>=1.0.0",
     "httpx>=0.26.0",
     "pydantic>=2.12.0",
-    "ucp-sdk==0.4.4",
+    "ucp-sdk==0.4.6",
     "fastapi>=0.109.0",
     "uvicorn[standard]>=0.38.0",
     "ruff>=0.14.11",