diff --git a/README.md b/README.md
index 112fe9e..15b4d0f 100644
--- a/README.md
+++ b/README.md
@@ -1290,6 +1290,13 @@ To configure **flyspell**, add the following to `~/.emacs.d/post-init.el`:
   ;; Set the ispell program name to aspell
   (ispell-program-name "aspell")
 
+  ;; Define the "en_US" spell-check dictionary locally, telling Emacs to use
+  ;; UTF-8 encoding, match words using alphabetic characters, allow apostrophes
+  ;; inside words, treat non-alphabetic characters as word boundaries, and pass
+  ;; -d en_US to the underlying spell-check program.
+  (setq ispell-local-dictionary-alist
+        '(("en_US" "[[:alpha:]]" "[^[:alpha:]]" "[']" nil ("-d" "en_US") nil utf-8)))
+
   ;; Configures Aspell's suggestion mode to "ultra", which provides more
   ;; aggressive and detailed suggestions for misspelled words. The language
   ;; is set to "en_US" for US English, which can be replaced with your desired
@@ -1303,7 +1310,7 @@ To configure **flyspell**, add the following to `~/.emacs.d/post-init.el`:
   :ensure nil
   :commands flyspell-mode
   :hook
-  ((prog-mode . flyspell-prog-mode)
+  (; (prog-mode . flyspell-prog-mode)
    (text-mode . (lambda()
                   (if (or (derived-mode-p 'yaml-mode)
                           (derived-mode-p 'yaml-ts-mode)