diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 543ddd9..d491dfb 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -26,6 +26,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: 切换 Python 锁文件下载源
+        run: python3 scripts/prepare-ci-uv-mirror.py
       - name: 安装 Rust 工具链
         run: |
           curl --proto '=https' --tlsv1.2 -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal
@@ -46,6 +48,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: 切换 Python 锁文件下载源
+        run: python3 scripts/prepare-ci-uv-mirror.py
       - run: corepack enable && corepack prepare pnpm@10.28.0 --activate
       - run: pnpm install --frozen-lockfile && pnpm build
         working-directory: server sync/console
@@ -76,6 +80,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: 切换 Python 锁文件下载源
+        run: python3 scripts/prepare-ci-uv-mirror.py
       - name: 安装 Rust 工具链
         run: |
           curl --proto '=https' --tlsv1.2 -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal --component rustfmt,clippy
diff --git a/scripts/prepare-ci-uv-mirror.py b/scripts/prepare-ci-uv-mirror.py
new file mode 100644
index 0000000..32c7997
--- /dev/null
+++ b/scripts/prepare-ci-uv-mirror.py
@@ -0,0 +1,28 @@
+from pathlib import Path
+
+
+LOCK_FILES = (
+    Path("backend/uv.lock"),
+    Path("server sync/uv.lock"),
+    Path("community-server/uv.lock"),
+)
+
+REPLACEMENTS = {
+    "https://pypi.org/simple": "https://mirrors.aliyun.com/pypi/simple",
+    "https://files.pythonhosted.org/packages/": "https://mirrors.aliyun.com/pypi/packages/",
+}
+
+
+def main() -> None:
+    for path in LOCK_FILES:
+        if not path.is_file():
+            continue
+        content = path.read_text(encoding="utf-8")
+        for source, mirror in REPLACEMENTS.items():
+            content = content.replace(source, mirror)
+        path.write_text(content, encoding="utf-8", newline="\n")
+        print(f"已切换锁文件下载源：{path}")
+
+
+if __name__ == "__main__":
+    main()