diff --git a/pyproject.toml b/pyproject.toml
index 75c3060..67bb25d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "superagent-py"
-version = "v0.2.36"
+version = "v0.2.39"
 description = ""
 readme = "README.md"
 authors = []
diff --git a/src/superagent/core/client_wrapper.py b/src/superagent/core/client_wrapper.py
index ef4ac1b..5d21b05 100644
--- a/src/superagent/core/client_wrapper.py
+++ b/src/superagent/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": "superagent-py",
-            "X-Fern-SDK-Version": "v0.2.36",
+            "X-Fern-SDK-Version": "v0.2.39",
         }
         token = self._get_token()
         if token is not None:
diff --git a/src/superagent/types/llm_model.py b/src/superagent/types/llm_model.py
index 51b977f..fd3592e 100644
--- a/src/superagent/types/llm_model.py
+++ b/src/superagent/types/llm_model.py
@@ -25,6 +25,7 @@ class LlmModel(str, enum.Enum):
     GPT_4_TURBO = "GPT_4_TURBO"
     GPT_4_TURBO_PREVIEW = "GPT_4_TURBO_PREVIEW"
     GPT_4_TURBO_2024_04_09 = "GPT_4_TURBO_2024_04_09"
+    GPT_4_0 = "GPT_4_0"
     MISTRAL_7_B_INSTRUCT_V_01 = "MISTRAL_7B_INSTRUCT_V01"
     MIXTRAL_8_X_7_B_INSTRUCT_V_01 = "MIXTRAL_8X7B_INSTRUCT_V01"
 
@@ -44,6 +45,7 @@ def visit(
         gpt_4_turbo: typing.Callable[[], T_Result],
         gpt_4_turbo_preview: typing.Callable[[], T_Result],
         gpt_4_turbo_2024_04_09: typing.Callable[[], T_Result],
+        gpt_4_0: typing.Callable[[], T_Result],
         mistral_7_b_instruct_v_01: typing.Callable[[], T_Result],
         mixtral_8_x_7_b_instruct_v_01: typing.Callable[[], T_Result],
     ) -> T_Result:
@@ -75,6 +77,8 @@ def visit(
             return gpt_4_turbo_preview()
         if self is LlmModel.GPT_4_TURBO_2024_04_09:
             return gpt_4_turbo_2024_04_09()
+        if self is LlmModel.GPT_4_0:
+            return gpt_4_0()
         if self is LlmModel.MISTRAL_7_B_INSTRUCT_V_01:
             return mistral_7_b_instruct_v_01()
         if self is LlmModel.MIXTRAL_8_X_7_B_INSTRUCT_V_01: