1 files changed, 1 insertions, 1 deletions

diff --git a/xtask/src/ast_src.rs b/xtask/src/ast_src.rs
index 98c8644e4..c14804aad 100644
--- a/xtask/src/ast_src.rs
+++ b/xtask/src/ast_src.rs
@@ -451,7 +451,7 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
         struct ContinueExpr: AttrsOwner { T![continue], T![lifetime] }
         struct BreakExpr: AttrsOwner { T![break], T![lifetime], Expr }
         struct Label { T![lifetime] }
-        struct BlockExpr: AttrsOwner { Label, T![unsafe], Block  }
+        struct BlockExpr: AttrsOwner { Label, T![unsafe], T![async], Block  }
         struct ReturnExpr: AttrsOwner { Expr }
         struct CallExpr: ArgListOwner { Expr }
         struct MethodCallExpr: AttrsOwner, ArgListOwner {