diff --git a/pyproject.toml b/pyproject.toml
index dbc5d85..c81edbb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "scrapybara"
 
 [tool.poetry]
 name = "scrapybara"
-version = "2.3.4"
+version = "2.3.5"
 description = ""
 readme = "README.md"
 authors = []
diff --git a/src/scrapybara/core/client_wrapper.py b/src/scrapybara/core/client_wrapper.py
index 0606cc0..8831014 100644
--- a/src/scrapybara/core/client_wrapper.py
+++ b/src/scrapybara/core/client_wrapper.py
@@ -16,7 +16,7 @@ def get_headers(self) -> typing.Dict[str, str]:
         headers: typing.Dict[str, str] = {
             "X-Fern-Language": "Python",
             "X-Fern-SDK-Name": "scrapybara",
-            "X-Fern-SDK-Version": "2.3.4",
+            "X-Fern-SDK-Version": "2.3.5",
         }
         headers["x-api-key"] = self.api_key
         return headers
diff --git a/src/scrapybara/types/act.py b/src/scrapybara/types/act.py
index 6e2bc1c..658883c 100644
--- a/src/scrapybara/types/act.py
+++ b/src/scrapybara/types/act.py
@@ -19,6 +19,7 @@ class ImagePart(BaseModel):
 
 class ToolCallPart(BaseModel):
     type: Literal["tool-call"] = "tool-call"
+    id: Optional[str] = None
     tool_call_id: str
     tool_name: str
     args: Dict[str, Any]