diff --git a/packages/SwingSet/package.json b/packages/SwingSet/package.json
index cb90ea8c104..3fdd960886c 100644
--- a/packages/SwingSet/package.json
+++ b/packages/SwingSet/package.json
@@ -94,8 +94,7 @@
     "require": [
       "@endo/init/debug.js"
     ],
-    "timeout": "20m",
-    "workerThreads": false
+    "timeout": "20m"
   },
   "publishConfig": {
     "access": "public"