diff --git a/composer.json b/composer.json
index d3e9e4cb..70f4f7c3 100644
--- a/composer.json
+++ b/composer.json
@@ -62,7 +62,8 @@
             "Crypt": "phpseclib/",
             "File": "phpseclib/",
             "Math": "phpseclib/",
-            "Net": "phpseclib/"
+            "Net": "phpseclib/",
+            "System": "phpseclib/"
         },
         "files": [
             "phpseclib/Crypt/Random.php"