diff --git a/.stats.yml b/.stats.yml
index 7fd34a6..2ab7577 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 16
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/opencode%2Fopencode-3c79948402e96d2aae6e46095db2cf80759750d1b042d6f91281a72c415b14de.yml
-openapi_spec_hash: f9c2fc5988f0a30397929995c2be2c85
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/opencode%2Fopencode-129afed79c2ff0ae5f660a17af692c0f716b0d61ce62700f107c1d905346793e.yml
+openapi_spec_hash: 4bc73b4bfb67367575ac7b582b77d912
 config_hash: 61e8ad6b1bd35aec38a7b20a2570b967
diff --git a/src/opencode_ai/resources/session.py b/src/opencode_ai/resources/session.py
index e972be1..ff5c246 100644
--- a/src/opencode_ai/resources/session.py
+++ b/src/opencode_ai/resources/session.py
@@ -174,6 +174,8 @@ class SessionResource(SyncAPIResource):
         Create and send a new message to a session
 
         Args:
+          session_id: Session ID
+
           extra_headers: Send extra headers
 
           extra_query: Add additional query parameters to the request
@@ -534,6 +536,8 @@ class AsyncSessionResource(AsyncAPIResource):
         Create and send a new message to a session
 
         Args:
+          session_id: Session ID
+
           extra_headers: Send extra headers
 
           extra_query: Add additional query parameters to the request
diff --git a/src/opencode_ai/types/session_chat_params.py b/src/opencode_ai/types/session_chat_params.py
index 0768d7c..e7b25d3 100644
--- a/src/opencode_ai/types/session_chat_params.py
+++ b/src/opencode_ai/types/session_chat_params.py
@@ -19,3 +19,4 @@ class SessionChatParams(TypedDict, total=False):
     provider_id: Required[Annotated[str, PropertyInfo(alias="providerID")]]
 
     session_id: Required[Annotated[str, PropertyInfo(alias="sessionID")]]
+    """Session ID"""