Kentucky is joining more than 20 U.S. states in banning the popular video app TikTok on government devices citing cybersecurity concerns.

The state said it had updated its employee handbook to bar state employees from using government-managed devices to access the Chinese-owned app “other than for a law enforcement purpose.” On Thursday, the governors of Wisconsin and North Carolina signed orders banning TikTok on government devices. Ohio, New Jersey and Arkansas also took similar actions earlier this week.