The central bank said on Thursday it has eased rules to allow more retail investors to directly invest in overseas securities, a move that comes as it tries to slow a strong baht currency.

Individuals with assets of at least 50 million baht ($1.60 million) but less than 100 million baht can now invest in securities abroad for up to $1 million a year, the Bank of Thailand said in a statement.

Previously, only investors with assets of at least 100 million baht were able to invest directly in overseas securities for up to $5 million a year, it said.

The baht traded at 31.35 per dollar at 0349 GMT, hovering at its highest level since November 2013. It’s Asia’s best performing currency this year, rising 4% against the greenback.