diff --git a/build/README b/build/README
index 07f0ebe3b55..67ceb05c8d2 100644
--- a/build/README
+++ b/build/README
@@ -45,9 +45,12 @@ Dolibarr working. It is here only to build Dolibarr packages, and those
 generated packages will not contains this "build" directory.
 
 
-We can find in "build", following sub-directories:
+You can find in "build", following sub-directories:
 
-* debian:
+* composer
+To test an upgrade of a lib.
+
+* debian
 To build Debian package.
 
 * dmg: