diff --git a/composer.json b/composer.json
index 4778398d..2a9fd753 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,8 @@
         "graham-campbell/markdown": "~2.0",
         "watson/validating": "0.10.*",
         "thujohn/rss": "~1.0",
-        "doctrine/dbal": "2.5.*"
+        "doctrine/dbal": "2.5.*",
+        "ext-mcrypt": "*"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.3",