diff --git a/scripts/upgrade b/scripts/upgrade
index 21ad0a9..a8579a0 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -50,7 +50,7 @@ fi
 if [ "$upgrade_type" == "UPGRADE_APP" ]; then
     ynh_script_progression --message="Upgrading source files..." --weight=2
 
-    ynh_setup_source --dest_dir="$install_dir"
+    ynh_setup_source --dest_dir="$install_dir" --full_replace=1
 fi
 
 chmod -R o-rwx "$install_dir"