Irish sign language is now officially recognised as a native and independent language.
Earlier this month the Oireachtas passed the Irish Sign Language Bill 2016 - and now President Higgins has signed the legislation to approve it.
The bill will benefit 50 thousand members of the deaf community here - and the language can now be used in the courts when necessary.
Senator Martin Conway has emphasised just how important this is for the deaf community in the country.
"Somebody who is a user of Irish sign language can now access all state services and can use Irish sign language in court proceedings, and effectively all interactions with the state."
"It's extremely important because there are over 5000 Irish citizens who use Irish sign language as their main medium of communication."