diff --git a/scripts/upgrade b/scripts/upgrade
index 3c5e294..c472295 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -32,7 +32,7 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
 
-	ynh_setup_source --dest_dir="$install_dir"
+	ynh_setup_source --dest_dir="$install_dir" --full_replace=1
 fi
 
 chmod -R o-rwx "$install_dir"