diff --git a/vllm/entrypoints/anthropic/protocol.py b/vllm/entrypoints/anthropic/protocol.py
index 19ca28f1d..c541db513 100644
--- a/vllm/entrypoints/anthropic/protocol.py
+++ b/vllm/entrypoints/anthropic/protocol.py
@@ -77,7 +77,7 @@ class AnthropicTool(BaseModel):
 class AnthropicToolChoice(BaseModel):
     """Tool Choice definition"""
 
-    type: Literal["auto", "any", "tool"]
+    type: Literal["auto", "any", "tool", "none"]
     name: str | None = None
 
     @model_validator(mode="after")
diff --git a/vllm/entrypoints/anthropic/serving.py b/vllm/entrypoints/anthropic/serving.py
index f0110de38..85232e918 100644
--- a/vllm/entrypoints/anthropic/serving.py
+++ b/vllm/entrypoints/anthropic/serving.py
@@ -349,6 +349,8 @@ class AnthropicServingMessages(OpenAIServingChat):
             req.tool_choice = "auto"
         elif tool_choice_type == "any":
             req.tool_choice = "required"
+        elif tool_choice_type == "none":
+            req.tool_choice = "none"
         elif tool_choice_type == "tool":
             req.tool_choice = ChatCompletionNamedToolChoiceParam.model_validate(
                 {