diff --git a/demo/package.json b/demo/package.json
index 6e1611b..884cfff 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -10,6 +10,6 @@
   "devDependencies": {
     "cesium": "^1.85.0",
     "vite": "^2.5.6",
-    "vite-plugin-cesium": "^1.2.6"
+    "vite-plugin-cesium": "^1.2.9"
   }
 }