diff --git a/scripts/upgrade b/scripts/upgrade
index 178f2b5..e5b9fa8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -57,7 +57,7 @@ popd
 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="$install_dir/build"
+ynh_setup_source --dest_dir="$install_dir/build" --full_replace=1
 
 ynh_secure_remove --file="$install_dir/live"
 mkdir -p "$install_dir/live"