York Theatre Royal is to receive £500,000 from the city’s council, to be put towards upgrading the venue.
The work will include improving the energy efficiency of the heating system, and investing in box office software.
It will also fund improvements to access for disabled theatregoers.
Councillor Darryl Smalley said: “The council has a long-standing partnership with York Theatre Royal and the theatre plays a significant role in contributing to the diversity of York’s economy and the well-being of residents.
“The decision session will set out how the council and York Theatre Royal will work together in the future, from strengthening the local economy, increasing opportunities for young people and ensuring value for money.”
The theatre will receive the funding over a period of four years.
The council has a history of supporting the venue, and in 2016 gave the theatre a four-year grant of £770,000 for refurbishment.
The theatre’s executive director Tom Bird said: “This ongoing commitment from City of York Council will ensure our theatre can continue to contribute to the economic, social and cultural life of York and the wider region.
“We have exciting plans over the next few years to ensure we are accessible to all, sustainable, and offer a diverse programme of productions, projects and initiatives in local communities, as well as continuing to welcome our many audiences and visitors into our historic building.”
“We look forward to working with the City of York Council and our many other partners to ensure the cultural life in our city continues to thrive,” he added.
The theatre is run by York Citizens’ Theatre Trust charity, and receives Arts Council England funding of £587,254 per year.