diff --git a/rust/src/main.rs b/rust/src/main.rs
index 4cd72a1..605ce29 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -732,7 +732,7 @@ async fn publish_firmware_info(
     timezone_time: &str,
 ) {
     mqtt::publish("/firmware/address", ip_address).await;
-    mqtt::publish("/firmware/state", format!("{:?}", &version).as_str())
+    mqtt::publish("/firmware/state", &serde_json::to_string(&version).unwrap())
         .await;
     mqtt::publish("/firmware/last_online", timezone_time)
         .await;