diff --git a/README.md b/README.md
index 39bc42d..d904e47 100644
--- a/README.md
+++ b/README.md
@@ -41,23 +41,29 @@ internet with high integrity on the supply chain of the firmware and OS used.
 
 ## Build ##
 
+### Update git submodules
+
+```
+git submodule update --init --recursive
+```
+
 ### Build a new release
 
-    ```
-    make release
-    ```
+```
+make release
+```
 
 ### Reproduce an existing release
 
-    ```
-    make attest
-    ```
+```
+make attest
+```
 
 ### Sign an existing release
 
-    ```
-    make sign
-    ```
+```
+make sign
+```
 
 ## Setup ##