Tarantini remained a regular in the 2019–20 season, as Rio Ave finished a joint-best fifth and with a record points tally of 55. On 22 February, he made his 400th appearance in a 2–1 win at C.D. Tondela. In May 2021, after the team's relegation, he went up to the fans in tears and asked for forgiveness; he was met with applause and requests to stay with the club, but was ultimately released by the board of directors in July.