diff --git a/scripts/upgrade b/scripts/upgrade
index 033f538..2bb7de1 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -24,7 +24,7 @@ ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 ynh_script_progression --message="Upgrading source files..." --weight=1
 
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source --dest_dir="$install_dir" --full_replace --keep="app composer.json"
+ynh_setup_source --dest_dir="$install_dir" --full_replace --full_replace=1 --keep="app composer.json"
 ynh_store_file_checksum --file="$install_dir/composer.json"
 mkdir -p "$install_dir/$app"