diff --git a/package.json b/package.json
index 0d397ec..2cf7d65 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,8 @@
     "phetLibs": [
       "twixt",
       "vegas"
-    ]
+    ],
+    "supportsOutputJS": true
   },
   "eslintConfig": {
     "extends": "../chipper/eslint/sim_eslintrc.js"