diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b6175387..df3292ba 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.17.3"
+  ".": "3.18.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 85c391c8..d1b66331 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 103
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-aeb94d91af916dbff0132ee7c4501df9223609b19fef0398a1a495e7a432ee36.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-36a6db97756e8658369c9af3c0ac532ecacb032e5b8f6211094dcb4052943ff3.yml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e5bb30d..a67df79f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 3.18.0 (2025-03-20)
+
+Full Changelog: [v3.17.3...v3.18.0](https://github.com/orbcorp/orb-python/compare/v3.17.3...v3.18.0)
+
+### Features
+
+* **api:** api update ([#603](https://github.com/orbcorp/orb-python/issues/603)) ([c55c63a](https://github.com/orbcorp/orb-python/commit/c55c63ae29ec4e910aaf53ffae6ffe9a302e8793))
+
 ## 3.17.3 (2025-03-17)
 
 Full Changelog: [v3.17.2...v3.17.3](https://github.com/orbcorp/orb-python/compare/v3.17.2...v3.17.3)
diff --git a/pyproject.toml b/pyproject.toml
index b94729e5..77e5e52f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "orb-billing"
-version = "3.17.3"
+version = "3.18.0"
 description = "The official Python library for the orb API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/orb/_version.py b/src/orb/_version.py
index 0ce14c88..9e68b0f5 100644
--- a/src/orb/_version.py
+++ b/src/orb/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "orb"
-__version__ = "3.17.3"  # x-release-please-version
+__version__ = "3.18.0"  # x-release-please-version
diff --git a/tests/api_resources/test_subscriptions.py b/tests/api_resources/test_subscriptions.py
index 49b4ffdb..dbd2dc56 100644
--- a/tests/api_resources/test_subscriptions.py
+++ b/tests/api_resources/test_subscriptions.py
@@ -197,7 +197,7 @@ def test_method_create_with_all_params(self, client: Orb) -> None:
                 }
             ],
             start_date=parse_datetime("2019-12-27T18:11:19.117Z"),
-            trial_duration_days=999999,
+            trial_duration_days=0,
             usage_customer_ids=["string"],
         )
         assert_matches_type(SubscriptionCreateResponse, subscription, path=["response"])
@@ -863,7 +863,7 @@ def test_method_schedule_plan_change_with_all_params(self, client: Orb) -> None:
                     "price_id": "h74gfhdjvn7ujokd",
                 }
             ],
-            trial_duration_days=999999,
+            trial_duration_days=0,
             usage_customer_ids=["string"],
         )
         assert_matches_type(SubscriptionSchedulePlanChangeResponse, subscription, path=["response"])
@@ -1343,7 +1343,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncOrb) -> No
                 }
             ],
             start_date=parse_datetime("2019-12-27T18:11:19.117Z"),
-            trial_duration_days=999999,
+            trial_duration_days=0,
             usage_customer_ids=["string"],
         )
         assert_matches_type(SubscriptionCreateResponse, subscription, path=["response"])
@@ -2009,7 +2009,7 @@ async def test_method_schedule_plan_change_with_all_params(self, async_client: A
                     "price_id": "h74gfhdjvn7ujokd",
                 }
             ],
-            trial_duration_days=999999,
+            trial_duration_days=0,
             usage_customer_ids=["string"],
         )
         assert_matches_type(SubscriptionSchedulePlanChangeResponse, subscription, path=["response"])