diff --git a/README.md b/README.md
index a47c3bee..163228dc 100644
--- a/README.md
+++ b/README.md
@@ -258,6 +258,11 @@ If you don't want all this, as mentioned, you can just pick and choose specific
 
 ### For Humans
 
+> **⚠️ Prerequisite: Bun is required**
+>
+> This tool **requires [Bun](https://bun.sh/) to be installed** on your system.
+> Even if you use `npx` to run the installer, the underlying runtime depends on Bun.
+
 Run the interactive installer:
 
 ```bash
diff --git a/README.zh-cn.md b/README.zh-cn.md
index 94e078aa..8f214a98 100644
--- a/README.zh-cn.md
+++ b/README.zh-cn.md
@@ -252,6 +252,11 @@
 
 ### 面向人类用户
 
+> **⚠️ 先决条件：需要安装 Bun**
+>
+> 此工具**需要系统中已安装 [Bun](https://bun.sh/)** 才能运行。
+> 即使使用 `npx` 运行安装程序，底层运行时仍依赖于 Bun。
+
 运行交互式安装程序：
 
 ```bash