diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index d55f2dd..36e8a46 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
           rm -rf /tmp/ci-venv-lint
           python3 -m venv /tmp/ci-venv-lint
           /tmp/ci-venv-lint/bin/pip install --quiet --upgrade pip
-          /tmp/ci-venv-lint/bin/pip install --quiet flake8
+          /tmp/ci-venv-lint/bin/pip install --quiet 'flake8==7.3.0'  # 锁版本：防漂移。2026-09-11 新版 pycodestyle 对现存代码报 E122 致 lint 全线误报，7.3.0 经全量 src/ 实证零报错
 
       - name: Lint with flake8
         run: |