diff --git a/packages/vite-plugin-istanbul-widget/CHANGELOG.md b/packages/vite-plugin-istanbul-widget/CHANGELOG.md
index 1b8fd57..1827c88 100644
--- a/packages/vite-plugin-istanbul-widget/CHANGELOG.md
+++ b/packages/vite-plugin-istanbul-widget/CHANGELOG.md
@@ -1,5 +1,10 @@
 # vite-plugin-istanbul-widget
 
+## 1.9.5
+### Patch Changes
+
+- fix: sourcemap incorrect
+
 ## 1.9.4
 ### Patch Changes
 
diff --git a/packages/vite-plugin-istanbul-widget/package.json b/packages/vite-plugin-istanbul-widget/package.json
index fd9d42d..12b7ca2 100644
--- a/packages/vite-plugin-istanbul-widget/package.json
+++ b/packages/vite-plugin-istanbul-widget/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vite-plugin-istanbul-widget",
-  "version": "1.9.4",
+  "version": "1.9.5",
   "description": "集成了 istanbul-widget 和 vite-plugin-istanbul 的vite插件",
   "type": "module",
   "keywords": [
diff --git a/packages/vite-plugin-istanbul-widget/src/astro/index.ts b/packages/vite-plugin-istanbul-widget/src/astro/index.ts
index 8b5333f..54ff5d7 100644
--- a/packages/vite-plugin-istanbul-widget/src/astro/index.ts
+++ b/packages/vite-plugin-istanbul-widget/src/astro/index.ts
@@ -45,7 +45,7 @@ export function istanbulWidget(opts: VitePluginIstanbulWidgetOptions): any {
 
                       return {
                         code,
-                        map: { mappings: '' },
+                        map: null,
                       }
                     }
                   }
diff --git a/packages/vite-plugin-istanbul-widget/src/index.ts b/packages/vite-plugin-istanbul-widget/src/index.ts
index 8c56133..cb6178e 100644
--- a/packages/vite-plugin-istanbul-widget/src/index.ts
+++ b/packages/vite-plugin-istanbul-widget/src/index.ts
@@ -80,7 +80,10 @@ export function istanbulWidget(opts: VitePluginIstanbulWidgetOptions): any {
       async load(id) {
         switch (id) {
           case resolvedVirtualModuleId(runtimeId): {
-            return resolveWidgetScript(istanbulWidgetConfig || {})
+            return {
+              code: resolveWidgetScript(istanbulWidgetConfig || {}),
+              map: null,
+            }
           }
           default:
             break
@@ -99,9 +102,12 @@ export function istanbulWidget(opts: VitePluginIstanbulWidgetOptions): any {
           }
 
           if (isEntry) {
-            return `import '${runtimeId}';
+            return {
+              code: `import '${runtimeId}';
               ${code}
-            `
+            `,
+              map: null,
+            }
           }
         },
       },