diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6b773ca3d..09a3b19ab 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,6 +3,7 @@ default_stages: [ commit ]
 # Install
 # 1. pip install metagpt[dev]
 # 2. pre-commit install
+# 3. pre-commit run --all-files  # make sure all files are clean
 repos:
   - repo: https://github.com/pycqa/isort
     rev: 5.11.5