Requiring a lower version of punycode

Is it possible to lower the requirement for "punycode": "^2.1.0" to "punycode": "^1.4.1"?

The difference between punycode 1.4.1 and punycode 2.1.0 is just that the latter is written in ES6.

The current version supports recent versions of Node.js only. It provides a CommonJS module and an ES6 module. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see v1.4.1.
-- punycode.js

When punycode 2.1.0 is used under IE11, it breaks with SCRIPT1002: Syntax error , because some ES6 constructs aren't supported.

I had this problem on the application I'm developing, and I fixed it by downgrading punycode to 1.4.1. Unfortunately your package doesn't allow a version lower than 2.1.0 and I'm afraid that it would break again if the punycode you are dependent on is used under IE11.

Inspect the package dependency declaration for the required punycode version and review the stated compatibility difference between versions 1.4.1 and 2.1.0. Verify the package's existing tests or browser checks with IE11 compatibility in mind; done means the dependency permits the older version without breaking URI.js.