diff --git a/exercise-solutions/async-chat/book.toml b/exercise-solutions/async-chat/book.toml
index 8281623..75742f5 100644
--- a/exercise-solutions/async-chat/book.toml
+++ b/exercise-solutions/async-chat/book.toml
@@ -7,3 +7,6 @@ title = "Async programming tutorial in Rust with tokio"
 
 [rust]
 edition = "2021"
+
+[output.html.playground]
+runnable = false