diff --git a/scripts/upgrade b/scripts/upgrade
index aefe3d8..bcdfd7a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -70,6 +70,11 @@ path_url=$(ynh_normalize_url_path $path_url)
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source "$final_path"
 
+#=================================================
+# INSTALL COMPOSER
+#=================================================
+init_composer $final_path
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================