diff --git a/src/together/types/chat_completions.py b/src/together/types/chat_completions.py
index 8e5132f..43f675e 100644
--- a/src/together/types/chat_completions.py
+++ b/src/together/types/chat_completions.py
@@ -29,6 +29,8 @@ class ResponseFormatType(str, Enum):
     JSON_OBJECT = "json_object"
     JSON_SCHEMA = "json_schema"
     REGEX = "regex"
+    GRAMMAR = "grammar"
+    EBNF = "ebnf"
 
 
 class FunctionCall(BaseModel):