diff --git a/lib/environment.js b/lib/environment.js
index <HASH>..<HASH> 100644
--- a/lib/environment.js
+++ b/lib/environment.js
@@ -13,6 +13,8 @@ module.exports = {
         string_decoder: {preferBuiltin: true, glob: true},
         buffer: {expose: 'buffer', glob: true},
         url: {preferBuiltin: true, glob: true},
+        punycode: {preferBuiltin: true, glob: true},
+        querystring: {preferBuiltin: true, glob: true},
         'liquid-json': {expose: 'json', glob: true},
         'crypto-js': {glob: true},
         atob: {glob: true},
Added punycode and querystring to the sandbox