diff --git a/.changeset/tiny-moose-occur.md b/.changeset/tiny-moose-occur.md
new file mode 100644
index 000000000..b5b94e6f0
--- /dev/null
+++ b/.changeset/tiny-moose-occur.md
@@ -0,0 +1,5 @@
+---
+"@crxjs/vite-plugin": patch
+---
+
+fix background.type manifest property typescript type
diff --git a/packages/vite-plugin/src/node/manifest.ts b/packages/vite-plugin/src/node/manifest.ts
index c3c89ea04..a4dc416c0 100644
--- a/packages/vite-plugin/src/node/manifest.ts
+++ b/packages/vite-plugin/src/node/manifest.ts
@@ -18,7 +18,7 @@ export interface WebAccessibleResourceById {
 
 export interface ChromeManifestBackground {
   service_worker: string
-  type?: 'module' // If the service worker uses ES modules
+  type?: 'module' | (string & {}) // If the service worker uses ES modules
 }
 
 export interface FirefoxManifestBackground {