diff --git a/xray-diffraction_en.html b/xray-diffraction_en.html
index e48113f..552bdb4 100644
--- a/xray-diffraction_en.html
+++ b/xray-diffraction_en.html
@@ -38,7 +38,8 @@
         "supportedBrands": [
           "phet",
           "adapted-from-phet"
-        ]
+        ],
+        "supportsOutputJS": true
       },
       "eslintConfig": {
         "extends": "../chipper/eslint/sim_eslintrc.js"