diff --git a/README.md b/README.md
index df2bccb..8f970c9 100644
--- a/README.md
+++ b/README.md
@@ -269,6 +269,15 @@ Feature Request if you have ideas how to improve it. If you know how to fix
 something, feel free to fork repository and create Pull Request. Test your
 changes in fork before creating Pull Request.
 
+Format python files:
+```bash
+pip install pre-commit
+pre-commit install
+
+# Format all files
+pre-commit run --all-files
+```
+
 ## License
 
 ArtemSBulgakov/buildozer-action is released under the terms of the