--- exercises/084_async.zig	2023-10-03 22:15:22.125574535 +0200
+++ answers/084_async.zig	2023-10-05 20:04:07.219436606 +0200
@@ -48,7 +48,7 @@
 pub fn main() void {
     // Additional Hint: you can assign things to '_' when you
     // don't intend to do anything with them.
-    foo();
+    _ = async foo();
 }
 
 fn foo() void {