diff --git a/.stats.yml b/.stats.yml
index 1ef2a27..bf003c7 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 27
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/browserbase-f39b852755134d01a440f7c37701f6c5397f43d13740d9ba08739cae488382a7.yml
-openapi_spec_hash: de6c25eebe5026d0fb9a4d7a93ec7718
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/browserbase-2d7e6d469fabaa60c27cb2c9c986b5bc2cd5d33fe13d9bd4e9b8ccaafa5b04c3.yml
+openapi_spec_hash: 473121b283812a3dfd866afe9b61dc7d
 config_hash: d4b0c534eaf7665ea25168e0e824c9d3
diff --git a/src/browserbase/types/session_create_params.py b/src/browserbase/types/session_create_params.py
index 2d0d39a..b01d447 100644
--- a/src/browserbase/types/session_create_params.py
+++ b/src/browserbase/types/session_create_params.py
@@ -90,6 +90,18 @@ class BrowserSettings(TypedDict, total=False):
     advanced_stealth: Annotated[bool, PropertyInfo(alias="advancedStealth")]
     """Advanced Browser Stealth Mode"""
 
+    allowed_domains: Annotated[SequenceNotStr[str], PropertyInfo(alias="allowedDomains")]
+    """An optional list of allowed domains for the session.
+
+    If you pass one or more domains, Browserbase restricts top-level (main-frame)
+    page navigations to the listed domains and their subdomains. For example,
+    `example.com` also permits `www.example.com` and `a.b.example.com`, but not
+    `notexample.com`. Matching is domain-based, not full-URL. An empty list (the
+    default) disables the restriction entirely. Browserbase enforces only main-frame
+    navigations; it does not block iframe/subframe loads or other in-page resource
+    requests (images, scripts, XHR, etc.).
+    """
+
     block_ads: Annotated[bool, PropertyInfo(alias="blockAds")]
     """Enable or disable ad blocking in the browser. Defaults to `false`."""
 
diff --git a/tests/api_resources/test_sessions.py b/tests/api_resources/test_sessions.py
index fe6d486..f83f3d2 100644
--- a/tests/api_resources/test_sessions.py
+++ b/tests/api_resources/test_sessions.py
@@ -33,6 +33,7 @@ def test_method_create_with_all_params(self, client: Browserbase) -> None:
         session = client.sessions.create(
             browser_settings={
                 "advanced_stealth": True,
+                "allowed_domains": ["string"],
                 "block_ads": True,
                 "captcha_image_selector": "captchaImageSelector",
                 "captcha_input_selector": "captchaInputSelector",
@@ -269,6 +270,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncBrowserbas
         session = await async_client.sessions.create(
             browser_settings={
                 "advanced_stealth": True,
+                "allowed_domains": ["string"],
                 "block_ads": True,
                 "captcha_image_selector": "captchaImageSelector",
                 "captcha_input_selector": "captchaInputSelector",