diff --git a/chat.go b/chat.go
index fbd52aa..df02355 100644
--- a/chat.go
+++ b/chat.go
@@ -24,11 +24,12 @@ var (
 
 // ChatCompletionMessage represents a single message in a chat completion conversation.
 type ChatCompletionMessage struct {
-	Role             string `json:"role"`                        // The role of the message sender, e.g., "user", "assistant", "system".
-	Content          string `json:"content"`                     // The content of the message.
-	Prefix           bool   `json:"prefix,omitempty"`            // The prefix of the message (optional) for Chat Prefix Completion [Beta Feature].
-	ReasoningContent string `json:"reasoning_content,omitempty"` // The reasoning content of the message (optional) when using the reasoner model with Chat Prefix Completion. When using this feature, the Prefix parameter must be set to true.
-	ToolCallID       string `json:"tool_call_id,omitempty"`      // Tool call that this message is responding to.
+	Role             string     `json:"role"`                        // The role of the message sender, e.g., "user", "assistant", "system".
+	Content          string     `json:"content"`                     // The content of the message.
+	Prefix           bool       `json:"prefix,omitempty"`            // The prefix of the message (optional) for Chat Prefix Completion [Beta Feature].
+	ReasoningContent string     `json:"reasoning_content,omitempty"` // The reasoning content of the message (optional) when using the reasoner model with Chat Prefix Completion. When using this feature, the Prefix parameter must be set to true.
+	ToolCallID       string     `json:"tool_call_id,omitempty"`      // Tool call that this message is responding to.
+	ToolCalls        []ToolCall `json:"tool_calls,omitempty"`        // Optional tool calls.
 }
 
 // FunctionParameters defines the parameters for a function.
diff --git a/go.mod b/go.mod
index 888df0a..5331fea 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cohesion-org/deepseek-go
 
-go 1.23.3
+go 1.23
 
 require (
 	github.com/joho/godotenv v1.5.1