How to get rid of Ruby 1.9.3 notice in Ubuntu after installing v2.3.3

I'm running the ubuntu bash shell in Windows 10. To install SASS on my system, I had to install ruby, so I followed the documentation on the ruby website which downloaded and installed Ruby v1.9.3

I've seen this answer and followed the mentioned answer to install Ruby v2.3.3

So, when I run

ruby -v

it gives me

ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux-gnu]

for the version details details.

But Sass is still using Ruby 1.9.3 and every time I compile SASS it shows me the ruby upgrade message even though I have ruby v2.3.3:

Can anyone tell me how to get rid of Ruby v1.9.3 so that my sass can recognize Ruby v2.3.3

Also, there is another problem that I'm seeing: when I'm running the SASS command with the --watch flag, it's breaking out of the watch mode. Not sure if this has to do with any kind of conflict between Ruby v1.9.3 & Ruby v2.3.3 that I've recently installed. Here is a --trace flag output of the error:

sass --watch assets/sass/style.scss:style.css --style compressed --trace
DEPRECATION WARNING:
Sass 3.5 will no longer support Ruby 1.9.3.
Please upgrade to Ruby 2.0.0 or greater as soon as possible.
>>> Sass is watching for changes. Press Ctrl-C to stop.
/var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/watcher.rb:85:in `initialize': Invalid argument - Failed to watch "/mnt/c/xampp/htdocs/homeloan/wp-content/themes/besthomeloans/assets/sass/partials": the given event mask contains no legal events; or fd is not an inotify file descriptor. (Errno::EINVAL) from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:190:in `new' from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:190:in `watch' from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:204:in `watch' from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:198:in `block in watch' from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:194:in `each' from /var/lib/gems/1.9.1/gems/rb-inotify-0.9.7/lib/rb-inotify/notifier.rb:194:in `watch' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:67:in `block (2 levels) in initialize_worker' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:67:in `each' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:67:in `block in initialize_worker' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:66:in `tap' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:66:in `initialize_worker' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:87:in `initialize' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapters/linux.rb:31:in `initialize' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:228:in `new' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:228:in `works?' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:190:in `block in usable_and_works?' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:190:in `each' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:190:in `all?' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:190:in `usable_and_works?' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:57:in `block in select_and_initialize' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:55:in `each' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/adapter.rb:55:in `select_and_initialize' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/listener.rb:291:in `initialize_adapter' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/listener.rb:283:in `setup' from /var/lib/gems/1.9.1/gems/sass-3.4.22/vendor/listen/lib/listen/listener.rb:65:in `start!' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:408:in `listen_to' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:341:in `watch' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/plugin.rb:109:in `method_missing' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/exec/sass_scss.rb:360:in `watch_or_update' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/exec/sass_scss.rb:51:in `process_result' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/exec/base.rb:52:in `parse' from /var/lib/gems/1.9.1/gems/sass-3.4.22/lib/sass/exec/base.rb:19:in `parse!' from /var/lib/gems/1.9.1/gems/sass-3.4.22/bin/sass:13:in `<top (required)>' from /usr/local/bin/sass:23:in `load' from /usr/local/bin/sass:23:in `<main>'

Not sure if this has to do with Windows 10 bash shell, but I though I should ask you guys as you guys are real guru in this.

Looking forward to your reply.

Know someone who can answer? Share a link to this question via email, Twitter, or Facebook.