diff --git a/README.md b/README.md
index d0e4a5e..2811e93 100644
--- a/README.md
+++ b/README.md
@@ -122,7 +122,7 @@ See [Options](#options) for options information.
 #### Options
 
 <details>
-<summary>You have the compressed file named <code>backup</code></summary>
+<summary><strong>※ You have the compressed file named <code>backup</code></strong></summary>
 
 ##### --zip-file
 
@@ -141,7 +141,7 @@ If not, the password will be asked for interactively.
 </details>
 
 <details>
-<summary>You have multiple independent backup files</summary>
+<summary><strong>※ You have multiple independent backup files</strong></summary>
 
 ##### --db-file
 
@@ -287,7 +287,7 @@ When using `Docker Compose`, you don't need to change it, but when using automat
 Default: `/bitwarden/data`
 
 <details>
-<summary>Other environment variables</summary>
+<summary><strong>※ Other environment variables</strong></summary>
 
 > **You don't need to change these environment variables unless you know what you're doing.**
 
diff --git a/README_zh.md b/README_zh.md
index d894485..70a2203 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -124,7 +124,7 @@ docker run --rm -it \
 #### 选项
 
 <details>
-<summary>你有一个名为 <code>backup</code> 的压缩文件</summary>
+<summary><strong>※ 你有一个名为 <code>backup</code> 的压缩文件</strong></summary>
 
 ##### --zip-file
 
@@ -143,7 +143,7 @@ docker run --rm -it \
 </details>
 
 <details>
-<summary>你有多个独立的备份文件</summary>
+<summary><strong>※ 你有多个独立的备份文件</strong></summary>
 
 ##### --db-file
 
@@ -288,7 +288,7 @@ Rclone 远程名称，你可以自己修改命名。
 默认值：`/bitwarden/data`
 
 <details>
-<summary>其他环境变量</summary>
+<summary><strong>※ 其他环境变量</strong></summary>
 
 > **你无需修改这些环境变量，除非你知道你在做什么。**