diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a4e519..a8752c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## 2025
 
+### 09-02 v0.4.19
+
+- [*] 部分情况下可能收不到 `role` 字段(合并转发中)
+- [*] 修改 `Buffer` 类型的默认值
+
 ### 08-29 v0.4.18
 
 - [*] 优化 `emit` 模拟触发事件的类型
diff --git a/package.json b/package.json
index 92d61c4..3a619dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-napcat-ts",
-  "version": "0.4.18",
+  "version": "0.4.19",
   "description": "napcat SDK for Node",
   "license": "MIT",
   "type": "module",
diff --git a/src/Interfaces.ts b/src/Interfaces.ts
index f549f63..03de003 100644
--- a/src/Interfaces.ts
+++ b/src/Interfaces.ts
@@ -234,7 +234,7 @@ export type GroupMessage = {
     user_id: number
     nickname: string
     card: string
-    role: 'owner' | 'admin' | 'member'
+    role?: 'owner' | 'admin' | 'member'
   }
   raw_message: string
   font: number
@@ -307,7 +307,7 @@ export type GroupMessageSelf = {
     user_id: number
     nickname: string
     card: string
-    role: 'owner' | 'admin' | 'member'
+    role?: 'owner' | 'admin' | 'member'
   }
   raw_message: string
   font: number
@@ -1036,7 +1036,7 @@ export type WSSendParam = {
   }
 }
 
-type Buffer<T = string> = { [key: string]: T }
+type Buffer<T = number> = { [key: string]: T }
 
 export type WSSendReturn = {
   // ontbot11
@@ -1962,7 +1962,7 @@ export type WSSendReturn = {
                 nick: string
               }
               shareTemplateId: string
-              shareTemplateData: Buffer<unknown>
+              shareTemplateData: Buffer
               showLittleTail: string
               gamePoints: string
               gamePointsUrl: string
@@ -1993,7 +1993,7 @@ export type WSSendReturn = {
                 nick: string
               }
               shareTemplateId: string
-              shareTemplateData: Buffer<unknown>
+              shareTemplateData: Buffer
               showLittleTail: string
               gamePoints: string
               gamePointsUrl: string