A Hong Kong court has added 10 months to pro-democracy activist Joshua Wong’s jail term, raising concerns the city is expanding its crackdown on dissent.

The ruling by Hong Kong’s District Court came Thursday after the 24-year-old recently pleaded guilty to taking part in an unauthorized assembly in 2020 — a crime punishable by up to five years in jail.

Wong and thousands of others held a vigil on June 4 last year to commemorate the 1989 Tiananmen Square crackdown, defying an unprecedented ban on the event that authorities said was necessary due to the pandemic.