Update punycode

README.md

@@ -54,13 +54,6 @@ Some modules have mocks in the `mock` directory. These are replacements with min
 | vm | --- | --- |
 | zlib | [devongovett/browserify-zlib](https://github.com/devongovett/browserify-zlib) | --- |
 
-## Outdated versions
-
-### `punycode`
-
-The current `punycode` implementation uses bestiejs/punycode.[email protected] because bestiejs/punycode.[email protected] requires modern JS engines that understand `const` and `let`.
-It will be removed someday since it has already been [deprecated from the node API](https://nodejs.org/api/punycode.html).
-
 ## Other Modules
 
 ### `dgram`

package.json

@@ -19,7 +19,7 @@
     "os-browserify": "^0.2.0",
     "path-browserify": "0.0.0",
     "process": "^0.11.0",
-    "punycode": "^1.2.4",
+    "punycode": "^2.1.0",
     "querystring-es3": "^0.2.0",
     "react-native-crypto": "^2.0.1",
     "react-native-randombytes": "^2.2.0",