Captain America is celebrating his 75th birthday this month, and in honor of his big day, Joss Whedon is once again teaming up with Astonishing X-Men artist John Cassaday.

The pair will work on a 75th anniversary issue of Captain America: Sam Wilson, writing an all new story. The issue will also include a main story from the series creative team of Nick Spencer and Daniel Acuna, as well as a story by Greg Rucka and Mike Perkins.

Whedon and Cassaday are known for their collaboration on Astonishing X-Men, which debuted in 2004. Both are no stranger to the character of Captain America; Whedon helmed both Avengers films for Marvel, and Cassaday drew Steve Rogers in a limited Captain America series that debuted after 9/11.