diff --git a/README.md b/README.md
index 6324f41306..fa48413a03 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@ Follow the steps below to install and run LPython on Linux, Windows or macOS.
     ```bash
     git clone https://github.com/lcompilers/lpython.git
     cd lpython
+    git submodule update --init
     ```
     
     You may also use GitHub Desktop to do the same.
diff --git a/doc/src/installation.md b/doc/src/installation.md
index dff2027ff7..a6bdd9250e 100644
--- a/doc/src/installation.md
+++ b/doc/src/installation.md
@@ -59,6 +59,7 @@ Follow the steps below to install and run LPython on Linux, Windows or macOS.
     ```bash
     git clone https://github.com/lcompilers/lpython.git
     cd lpython
+    git submodule update --init
     ```
     
     You may also use GitHub Desktop to do the same.