diff --git a/README.md b/README.md
index 2a68581..1a00a9f 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,9 @@ assert slugify("C'est déjà l'été.", algorithm='modern') == 'c-est-deja-l-ete
 assert slugify('影師嗎', backend='text-unidecode', algorithm='modern') == 'ying-shi-ma'
 assert slugify('影師嗎', allow_unicode=True, algorithm='modern') == '影師嗎'
 
+# Truncate long slugs with max_length.
+assert slugify('Hello, world!', max_length=8) == 'hello-wo'
+
 # Calling slugify() without algorithm uses the legacy pipeline (the old default),
 # kept unchanged for backward compatibility.
 assert slugify("C'est déjà l'été.") == 'c-est-deja-l-ete'