Post Malone and 21 Savage have secured their first No. 1 Billboard Hot 100 song of their careers with “Rockstar.” Their infectious song dethroned Cardi B's two-week reign at the top with "Bodak Yellow."

According to Nielsen Music (via Billboard), Post Malone's song logged in 51.3 million U.S. streams last week. In addition, it sold 48,000 downloads. "Rockstar" also becomes the first No. 1 for both Post Malone and 21 Savage on the Hot R&B/Hip-Hop Songs and Hot Rap Songs charts.

Overall, "Rockstar" is the fifth No. 1 rap song of of 2017, tying for the most in a single year on the Billboard Hot 100 tally.

Not only is Post Malone ruling the U.S. charts, he's conquering the Australian music charts as well. The Texas-based rapper's "Rockstar" notched a third consecutive week at No. 1 on the ARIA Singles Chart.

This isn't Post Malone's first trip on the Hot 100 chart. He had previously peaked at a No. 8 high with "Congratulations," featuring Quavo, in July. Meanwhile, 21 Savage previously reached the No. 12 spot on the Hot 100 with "Bank Account."

"Rockstar” is expected to be featured on his upcoming second album Beerbongs & Bentleys, which still doesn't have a release date.

Cheer up, Post Malone!