diff --git a/README.md b/README.md
index cbdf7cf..6d48a75 100644
--- a/README.md
+++ b/README.md
@@ -138,7 +138,7 @@ The whole repository is also packaged as a single plugin that bundles every cate
 **Codex** — the repo ships `.codex-plugin/plugin.json`, so it is plugin-ready. To install today, use the CLI above (`npx skills add LLMQuant/skills -a codex`), or install a single category skill via the skill installer:
 
 ```text
-$skill-installer install https://github.com/LLMQuant/skills/tree/main/skills/llmquant-options
+$skill-installer install https://github.com/LLMQuant/skills/tree/master/skills/llmquant-options
 ```
 
 **Cursor · Antigravity · other agents** — use the recommended CLI with the matching agent, e.g. `npx skills add LLMQuant/skills -a cursor` or `-a antigravity`.
diff --git a/README.zh-CN.md b/README.zh-CN.md
index e7aaebf..b08e407 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -135,7 +135,7 @@ npx skills add LLMQuant/skills -a codex
 **Codex**：仓库里带了 `.codex-plugin/plugin.json`，已经可以当插件用。现在想装的话，用上面那条命令（`npx skills add LLMQuant/skills -a codex`），或者用 skill installer 装单个大类 skill：
 
 ```text
-$skill-installer install https://github.com/LLMQuant/skills/tree/main/skills/llmquant-options
+$skill-installer install https://github.com/LLMQuant/skills/tree/master/skills/llmquant-options
 ```
 
 **Cursor、Antigravity、其他 Agent**：用上面推荐的命令，把 agent 名字换成对应的就行，比如 `npx skills add LLMQuant/skills -a cursor` 或 `-a antigravity`。