diff --git a/README.md b/README.md
index 1e82856..d23f290 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,10 @@ The agent's strengths are concentrated where they matter most — dynamic decisi
 
 ## How to Use
 
+### Prerequisites
+
+- **Git >= 2.38** — Open Code Review relies on Git for diff generation, code search, and repository operations.
+
 ### CLI
 
 #### Install
diff --git a/README.zh-CN.md b/README.zh-CN.md
index d84bd7f..485eedd 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -92,6 +92,10 @@ Open Code Review 的核心设计理念是将确定性工程与 Agent 结合，
 
 ## 如何使用
 
+### 前置条件
+
+- **Git >= 2.38** — Open Code Review 依赖 Git 进行 diff 生成、代码搜索和仓库操作。
+
 ### CLI
 
 #### 安装