diff --git a/.github/workflows/pr-check.yml b/.github/workflows/pr-check.yml
index cc82c98..af15af6 100644
--- a/.github/workflows/pr-check.yml
+++ b/.github/workflows/pr-check.yml
@@ -58,6 +58,11 @@ jobs:
         with:
           node-version: 24
 
+      # lint:i18n 脚本用 bun 跑（package.json: "bun scripts/check_i18n.ts"），
+      # CI 默认环境没有 bun 会报 sh: bun: not found
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
       - name: Install dependencies
         run: npm install