diff --git a/packages/liveblocks-server/package.json b/packages/liveblocks-server/package.json
index 28746be4d66..796f831ea60 100644
--- a/packages/liveblocks-server/package.json
+++ b/packages/liveblocks-server/package.json
@@ -58,7 +58,7 @@
     "prettier": "^3.3.2",
     "publint": "^0.3.17",
     "tsd": "^0.33.0",
-    "tsup": "^8.1.0",
+    "tsup": "^8.5.1",
     "typescript": "^5.9.3",
     "vite-tsconfig-paths": "^6.1.1",
     "vitest": "^3.2.4"