diff --git a/composer.json b/composer.json
index 36f91e0..3951639 100755
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "require": {
         "laralum/laralum": "1.*",
         "laralum/files": "1.*",
-        "graham-campbell/markdown": "^7",
+        "graham-campbell/markdown": "7.*|8.*",
         "league/html-to-markdown": "4.*"
 	},
     "license": "MIT",