diff --git a/composer.json b/composer.json
index eae0d8d..13750b4 100644
--- a/composer.json
+++ b/composer.json
@@ -34,8 +34,8 @@
         "php": ">=5.3.6",
         "twig/twig": "^1.36",
         "symfony/yaml" : "^2.8",
-        "erusev/parsedown": "~1.8.0|1.8.0@beta",
-        "erusev/parsedown-extra": "~0.8.0|0.8.0@beta"
+        "erusev/parsedown": "1.8.0-beta-7",
+        "erusev/parsedown-extra": "0.8.0-beta-1"
     },
     "suggest": {
         "picocms/pico-theme": "Pico requires a theme to actually display the contents of your website. This is Pico's official default theme.",