diff --git a/packages/web/package.json b/packages/web/package.json
index b4f916a0..8d6c0a32 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -90,7 +90,7 @@
     "@vitest/coverage-istanbul": "^4.0.18",
     "@webgpu/types": "^0.1.69",
     "esbuild": "^0.23.0",
-    "tsdown": "^0.20.3",
+    "tsdown": "^0.21.8",
     "typescript": "5.9.3",
     "vitest": "^4.0.18"
   },