diff --git a/package.json b/package.json
index 57bd18e..1d6d562 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   ],
   "scripts": {
     "build": "bunchee",
-    "dev": "bunchee --watch",
+    "dev": "bunchee --watch --sourcemap",
     "dev:website": "turbo run dev --filter=website...",
     "dev:test": "turbo run dev --filter=test...",
     "format": "prettier --write .",
@@ -48,7 +48,7 @@
     "@playwright/test": "^1.30.0",
     "@types/node": "^18.11.13",
     "@types/react": "^18.0.26",
-    "bunchee": "^4.2.4",
+    "bunchee": "^4.2.5",
     "prettier": "^2.8.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f16921d..7bd7002 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -7,7 +7,7 @@ importers:
       '@playwright/test': ^1.30.0
       '@types/node': ^18.11.13
       '@types/react': ^18.0.26
-      bunchee: ^4.2.4
+      bunchee: ^4.2.5
       prettier: ^2.8.4
       react: ^18.2.0
       react-dom: ^18.2.0
@@ -17,7 +17,7 @@ importers:
       '@playwright/test': 1.34.3
       '@types/node': 18.16.16
       '@types/react': 18.2.8
-      bunchee: 4.2.4_typescript@4.9.5
+      bunchee: 4.2.5_typescript@4.9.5
       prettier: 2.8.8
       react: 18.2.0
       react-dom: 18.2.0_react@18.2.0
@@ -1384,8 +1384,8 @@ packages:
     engines: {node: '>=6'}
     dev: true
 
-  /bunchee/4.2.4_typescript@4.9.5:
-    resolution: {integrity: sha512-asvejnIb4dZtKc6C5dxXPC3YGb6jT6qrh162dMQ43ulUMmX8Hsdp4FaWhCnm4US+hCEcqDcWNvjJNUxHHBbcqQ==}
+  /bunchee/4.2.5_typescript@4.9.5:
+    resolution: {integrity: sha512-0bdliOIYuAvlJBQwS9nbGXCeJShPISCDIkt8FUg0X2f4IwIdLmCX/PdIEqBvYiF0neXNoBUip8RaEXK++V3GNQ==}
     engines: {node: '>= 18.0.0'}
     hasBin: true
     peerDependencies: