diff --git a/packages/astro-tunnel/package.json b/packages/astro-tunnel/package.json
index deb360b..ccbe742 100644
--- a/packages/astro-tunnel/package.json
+++ b/packages/astro-tunnel/package.json
@@ -34,7 +34,7 @@
   "devDependencies": {
     "@types/node": "22.15.17",
     "astro": "5.7.12",
-    "tsdown": "0.11.1",
+    "tsdown": "0.13.2",
     "typescript": "5.8.3"
   },
   "peerDependencies": {