diff --git a/packages/wc/package.json b/packages/wc/package.json
index cb6d751a..6f2c6600 100644
--- a/packages/wc/package.json
+++ b/packages/wc/package.json
@@ -52,7 +52,7 @@
     "@vitest/browser": "^4.0.18",
     "@vitest/browser-playwright": "^4.0.18",
     "@vitest/coverage-istanbul": "^4.0.18",
-    "tsdown": "^0.20.3",
+    "tsdown": "^0.21.8",
     "typescript": "5.9.3",
     "vitest": "^4.0.18"
   },