diff --git a/.changes/fix-dev-server-html-serialization.md b/.changes/fix-dev-server-html-serialization.md
new file mode 100644
index 000000000..7427b8591
--- /dev/null
+++ b/.changes/fix-dev-server-html-serialization.md
@@ -0,0 +1,6 @@
+---
+"cli.rs": patch
+"cli.js": patch
+---
+
+Fixes HTML serialization removing template tags on the dev server.
diff --git a/tooling/cli/src/helpers/web_dev_server.rs b/tooling/cli/src/helpers/web_dev_server.rs
index 41061c1c8..53dfa077c 100644
--- a/tooling/cli/src/helpers/web_dev_server.rs
+++ b/tooling/cli/src/helpers/web_dev_server.rs
@@ -126,7 +126,7 @@ async fn handler<T>(req: Request<T>, state: Arc<State>) -> impl IntoResponse {
           head.prepend(script_el);
         });
 
-        f = document.to_string().as_bytes().to_vec();
+        f = tauri_utils::html::serialize_node(&document);
       }
 
       (StatusCode::OK, [(CONTENT_TYPE, mime_type)], f)