diff --git a/.stats.yml b/.stats.yml
index fe0dd56b..eb55da54 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 62
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/mixedbread%2Fmixedbread-b091721a627d75feb8567f628f99405d5778b0b88e9cc09fc664dd8e97c6d720.yml
 openapi_spec_hash: a23a2aecdcff5fa1d6c8cdc0df0bdfb7
-config_hash: 22ce3b96e325037f81e7dbf22bdd8d24
+config_hash: c56a6c9375e7640ce70ff00420e8605a
diff --git a/src/mixedbread/_utils/_utils.py b/src/mixedbread/_utils/_utils.py
index 50d59269..eec7f4a1 100644
--- a/src/mixedbread/_utils/_utils.py
+++ b/src/mixedbread/_utils/_utils.py
@@ -133,7 +133,7 @@ def is_given(obj: _T | NotGiven | Omit) -> TypeGuard[_T]:
 # Type safe methods for narrowing types with TypeVars.
 # The default narrowing for isinstance(obj, dict) is dict[unknown, unknown],
 # however this cause Pyright to rightfully report errors. As we know we don't
-# care about the contained types we can safely use `object` in it's place.
+# care about the contained types we can safely use `object` in its place.
 #
 # There are two separate functions defined, `is_*` and `is_*_t` for different use cases.
 # `is_*` is for when you're dealing with an unknown input
diff --git a/src/mixedbread/resources/stores/files.py b/src/mixedbread/resources/stores/files.py
index ed7729bc..1e871645 100644
--- a/src/mixedbread/resources/stores/files.py
+++ b/src/mixedbread/resources/stores/files.py
@@ -8,7 +8,7 @@
 import httpx
 
 from ...lib import polling
-from ..._types import Body, FileTypes, Omit, Query, Headers, NotGiven, SequenceNotStr, omit, not_given
+from ..._types import Body, Omit, Query, Headers, NotGiven, FileTypes, SequenceNotStr, omit, not_given
 from ..._utils import maybe_transform, async_maybe_transform
 from ..._compat import cached_property
 from ..._resource import SyncAPIResource, AsyncAPIResource
@@ -356,7 +356,7 @@ def search(
 
     def poll(
         self,
-        file_id: str,
+        file_identifier: str,
         *,
         store_identifier: str,
         poll_interval_ms: int | NotGiven = not_given,
@@ -366,7 +366,7 @@ def poll(
         """
         Poll for a file's status until it reaches a terminal state.
         Args:
-            file_id: The ID of the file to poll
+            file_identifier: The ID or external_id of the file to poll
             store_identifier: The ID of the store
             poll_interval_ms: The interval between polls in milliseconds
             poll_timeout_ms: The maximum time to poll for in milliseconds
@@ -376,7 +376,7 @@ def poll(
         polling_interval_ms = poll_interval_ms or 500
         polling_timeout_ms = poll_timeout_ms or None
         return polling.poll(
-            fn=functools.partial(self.retrieve, file_id, store_identifier=store_identifier, **kwargs),
+            fn=functools.partial(self.retrieve, file_identifier, store_identifier=store_identifier, **kwargs),
             condition=lambda res: res.status == "completed" or res.status == "failed" or res.status == "cancelled",
             interval_seconds=polling_interval_ms / 1000,
             timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
@@ -388,6 +388,9 @@ def create_and_poll(
         *,
         store_identifier: str,
         metadata: Optional[object] | NotGiven = not_given,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         poll_interval_ms: int | NotGiven = not_given,
         poll_timeout_ms: float | NotGiven = not_given,
@@ -405,7 +408,14 @@ def create_and_poll(
             The file object once it reaches a terminal state
         """
         self.create(
-            store_identifier=store_identifier, file_id=file_id, metadata=metadata, experimental=experimental, **kwargs
+            store_identifier=store_identifier,
+            file_id=file_id,
+            metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
+            experimental=experimental,
+            **kwargs,
         )
         return self.poll(
             file_id,
@@ -421,18 +431,39 @@ def upload(
         store_identifier: str,
         file: FileTypes,
         metadata: Optional[object] | Omit = omit,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         **kwargs: Any,
     ) -> StoreFile:
         """Upload a file to the `files` API and then attach it to the given store.
         Note the file will be asynchronously processed (you can use the alternative
         polling helper method to wait for processing to complete).
+
+        Args:
+          store_identifier: The ID or name of the store
+          file: The file to upload
+          metadata: Optional metadata for the file
+          config: Configuration for adding the file
+          external_id: External identifier for this file in the store
+          overwrite: If true, overwrite an existing file with the same external_id
+          experimental: Configuration for a file.
+          extra_headers: Send extra headers
+          extra_query: Add additional query parameters to the request
+          extra_body: Add additional JSON properties to the request
+          timeout: Override the client-level default timeout for this request, in seconds
+        Returns:
+            The file object once it reaches a terminal state
         """
         file_obj = self._client.files.create(file=file, **kwargs)
         return self.create(
             store_identifier=store_identifier,
             file_id=file_obj.id,
             metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
             experimental=experimental,
             **kwargs,
         )
@@ -443,17 +474,37 @@ def upload_and_poll(
         store_identifier: str,
         file: FileTypes,
         metadata: Optional[object] | NotGiven = not_given,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         poll_interval_ms: int | NotGiven = not_given,
         poll_timeout_ms: float | NotGiven = not_given,
         **kwargs: Any,
     ) -> StoreFile:
-        """Add a file to a store and poll until processing is complete."""
+        """Add a file to a store and poll until processing is complete.
+        
+        Args:
+            store_identifier: The ID or name of the store
+            file: The file to upload
+            metadata: Optional metadata for the file
+            config: Configuration for adding the file
+            external_id: External identifier for this file in the store
+            overwrite: If true, overwrite an existing file with the same external_id
+            experimental: Configuration for a file.
+            poll_interval_ms: The interval between polls in milliseconds
+            poll_timeout_ms: The maximum time to poll for in milliseconds
+        Returns:
+            The file object once it reaches a terminal state
+        """
         file_obj = self._client.files.create(file=file, **kwargs)
         return self.create_and_poll(
             store_identifier=store_identifier,
             file_id=file_obj.id,
             metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
             experimental=experimental,
             poll_interval_ms=poll_interval_ms,
             poll_timeout_ms=poll_timeout_ms,
@@ -790,7 +841,7 @@ async def search(
 
     async def poll(
         self,
-        file_id: str,
+        file_identifier: str,
         *,
         store_identifier: str,
         poll_interval_ms: int | NotGiven = not_given,
@@ -800,7 +851,7 @@ async def poll(
         """
         Poll for a file's status until it reaches a terminal state.
         Args:
-            file_id: The ID of the file to poll
+            file_identifier: The ID or external_id of the file to poll
             store_identifier: The ID of the store
             poll_interval_ms: The interval between polls in milliseconds
             poll_timeout_ms: The maximum time to poll for in milliseconds
@@ -810,7 +861,7 @@ async def poll(
         polling_interval_ms = poll_interval_ms or 500
         polling_timeout_ms = poll_timeout_ms or None
         return await polling.poll_async(
-            fn=functools.partial(self.retrieve, file_id, store_identifier=store_identifier, **kwargs),
+            fn=functools.partial(self.retrieve, file_identifier, store_identifier=store_identifier, **kwargs),
             condition=lambda res: res.status == "completed" or res.status == "failed" or res.status == "cancelled",
             interval_seconds=polling_interval_ms / 1000,
             timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
@@ -822,6 +873,9 @@ async def create_and_poll(
         *,
         store_identifier: str,
         metadata: Optional[object] | NotGiven = not_given,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         poll_interval_ms: int | NotGiven = not_given,
         poll_timeout_ms: float | NotGiven = not_given,
@@ -833,6 +887,10 @@ async def create_and_poll(
             file_id: The ID of the file to poll
             store_identifier: The ID of the store
             metadata: The metadata to attach to the file
+            config: Configuration for adding the file
+            external_id: External identifier for this file in the store
+            overwrite: If true, overwrite an existing file with the same external_id
+            experimental: Configuration for a file.
             poll_interval_ms: The interval between polls in milliseconds
             poll_timeout_ms: The maximum time to poll for in milliseconds
         Returns:
@@ -842,6 +900,9 @@ async def create_and_poll(
             store_identifier=store_identifier,
             file_id=file_id,
             metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
             experimental=experimental,
             **kwargs,
         )
@@ -859,18 +920,37 @@ async def upload(
         store_identifier: str,
         file: FileTypes,
         metadata: Optional[object] | NotGiven = not_given,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         **kwargs: Any,
     ) -> StoreFile:
         """Upload a file to the `files` API and then attach it to the given vector store.
         Note the file will be asynchronously processed (you can use the alternative
         polling helper method to wait for processing to complete).
+
+        Args:
+            store_identifier: The ID or name of the store
+            file: The file to upload
+            metadata: Optional metadata for the file
+            config: Configuration for adding the file
+            external_id: External identifier for this file in the store
+            overwrite: If true, overwrite an existing file with the same external_id
+            experimental: Configuration for a file.
+            poll_interval_ms: The interval between polls in milliseconds
+            poll_timeout_ms: The maximum time to poll for in milliseconds
+        Returns:
+            The file object once it reaches a terminal state
         """
         file_obj = await self._client.files.create(file=file, **kwargs)
         return await self.create(
             store_identifier=store_identifier,
             file_id=file_obj.id,
             metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
             experimental=experimental,
             **kwargs,
         )
@@ -881,17 +961,37 @@ async def upload_and_poll(
         store_identifier: str,
         file: FileTypes,
         metadata: Optional[object] | NotGiven = not_given,
+        config: file_create_params.Config | Omit = omit,
+        external_id: Optional[str] | Omit = omit,
+        overwrite: bool | Omit = omit,
         experimental: file_create_params.Experimental | Omit = omit,
         poll_interval_ms: int | NotGiven = not_given,
         poll_timeout_ms: float | NotGiven = not_given,
         **kwargs: Any,
     ) -> StoreFile:
-        """Add a file to a store and poll until processing is complete."""
+        """Add a file to a store and poll until processing is complete.
+        
+        Args:
+            store_identifier: The ID or name of the store
+            file: The file to upload
+            metadata: Optional metadata for the file
+            config: Configuration for adding the file
+            external_id: External identifier for this file in the store
+            overwrite: If true, overwrite an existing file with the same external_id
+            experimental: Configuration for a file.
+            poll_interval_ms: The interval between polls in milliseconds
+            poll_timeout_ms: The maximum time to poll for in milliseconds
+        Returns:
+            The file object once it reaches a terminal state
+        """
         file_obj = await self._client.files.create(file=file, **kwargs)
         return await self.create_and_poll(
             store_identifier=store_identifier,
             file_id=file_obj.id,
             metadata=metadata,
+            config=config,
+            external_id=external_id,
+            overwrite=overwrite,
             experimental=experimental,
             poll_interval_ms=poll_interval_ms,
             poll_timeout_ms=poll_timeout_ms,