diff --git a/composer.json b/composer.json
index 367bc31..e801c83 100755
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,8 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "illuminate/database": "4.2.x|~5.0"
+        "illuminate/database": "4.2.x|~5.0",
+        "ext-mbstring": "*"
     },
     "autoload": {
         "psr-4": {