diff --git a/composer.json b/composer.json
index 4b1ee3f..2bbed1b 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "symfony/phpunit-bridge": "^4.4.9|^5.0.9",
         "erusev/parsedown": "^1.7",
         "league/commonmark": "^1.0",
-        "league/html-to-markdown": "^4.8",
+        "league/html-to-markdown": "^4.8|^5.0",
         "michelf/php-markdown": "^1.8"
     },
     "autoload": {