diff --git a/composer.json b/composer.json
index 96c3a15..b991fcf 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         "hoa/protocol"     : "~1.0",
         "hoa/router"       : "~3.0",
         "hoa/view"         : "~3.0",
-        "league/commonmark": "~0.16",
+        "league/commonmark": "~0.16 || ~1.0",
         "nikic/php-parser" : "~4.0"
     },
     "autoload": {