diff --git a/README.md b/README.md
index ebf04455..43602566 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,11 @@ $ git merge upstream/master
 $ git push origin HEAD
 ```
 
+You may need to update your submodules.
+```bash
+git submodule update --init --recursive
+```
+
 ### Dependencies
 
 Make sure you have properly installed in your system the required libraries.