diff --git a/package.json b/package.json
index 82129507..82663c72 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "types": "es/index.d.ts",
   "unpkg": "dist/larkmap.min.js",
   "sideEffects": [
-    "**/*.less"
+    "**/*.css"
   ],
   "files": [
     "lib",