diff --git a/README.org b/README.org
index bd6f1a4..bbfdd51 100644
--- a/README.org
+++ b/README.org
@@ -4088,7 +4088,7 @@ Listing [[lst:sbcl-core-for-sly]] tangles to a script to dump such a [[http://ww
 #+caption: Configure =sly=.
 #+name: lst:configure-sly
 #+begin_src emacs-lisp -n :results silent
-(when (ensure-package-installation 'sly 'sly-named-readtables)
+(when (ensure-package-installation 'sly 'sly-macrostep 'sly-named-readtables)
   (with-eval-after-load 'sly
     ;; Set `sly-default-lisp' instead of `inferior-lisp-program',
     ;; because `sly' uses `inferior-lisp-program' only as a backwards