diff --git a/README.md b/README.md
index 1d2465b2..a62629a3 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,10 @@ Any code added to the tutorial should work in parallel. If any changes are made
 ```bash
 python3 -m jupytext --sync  */*.ipynb --set-formats ipynb,py:light
 ```
+or
+```bash
+python3 -m jupytext --sync  */*.py --set-formats ipynb,py:light
+```
 
 Any code added to the tutorial should work in parallel.