diff --git a/src/api2/node/apt.rs b/src/api2/node/apt.rs
index c65e4141..334a2713 100644
--- a/src/api2/node/apt.rs
+++ b/src/api2/node/apt.rs
@@ -206,6 +206,7 @@ fn apt_update_available(_param: Value) -> Result<Value, Error> {
 }
 
 #[api(
+    protected: true,
     input: {
         properties: {
             node: {