diff --git a/README.md b/README.md
index abc4aa3..371b82c 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@ See [motivation.md](./docs/motivation.md) for motivation and vision.
 
    ```bash
    git clone https://github.com/tonytins/mysimulation.git
+   git submodule update --init --recursive
    ```
 
 2. **Navigate to the Repository**: