diff --git a/package.json b/package.json
index 62a3153..d3d2a53 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vite-plugin-cesium",
-  "version": "1.2.7",
+  "version": "1.2.9",
   "description": "Cesium library plugin for Vite",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/index.ts b/src/index.ts
index 71da6b8..a13f074 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,7 +2,7 @@ import fs from 'fs-extra';
 import path from 'path';
 import externalGlobals from 'rollup-plugin-external-globals';
 import serveStatic from 'serve-static';
-import { HtmlTagDescriptor, Plugin, UserConfig } from 'vite';
+import { HtmlTagDescriptor, normalizePath, Plugin, UserConfig } from 'vite';
 
 interface VitePluginCesiumOptions {
   /**
@@ -116,14 +116,16 @@ function vitePluginCesium(
           tag: 'link',
           attrs: {
             rel: 'stylesheet',
-            href: path.join(CESIUM_BASE_URL, 'Widgets/widgets.css')
+            href: normalizePath(
+              path.join(CESIUM_BASE_URL, 'Widgets/widgets.css')
+            )
           }
         }
       ];
       if (isBuild && !rebuildCesium) {
         tags.push({
           tag: 'script',
-          attrs: { src: path.join(base, 'cesium/Cesium.js') }
+          attrs: { src: normalizePath(path.join(base, 'cesium/Cesium.js')) }
         });
       }
       return tags;