A container cap with tamper-evident band formed with a detent ring and a tearband, forming a tamper ring. When the cap is installed on the container neck, the detent ring engages an abutment shoulder on the neck to force latch tabs formed on the detent ring to engage a tamper band formed on the cap. Detent tabs formed on the detent ring engage a tamper projection shoulder on the container neck to prevent the detent ring from removal from the container neck when the cap is removed from the container.