diff --git a/composer.json b/composer.json
index 699918a..e189e36 100644
--- a/composer.json
+++ b/composer.json
@@ -11,10 +11,10 @@
     ],
     "require": {
         "php": "^7.1.3",
+        "illuminate/notifications": "~5.8",
         "nexmo/client": "^1.0"
     },
     "require-dev": {
-        "illuminate/notifications": "~5.7",
         "mockery/mockery": "^1.0",
         "phpunit/phpunit": "^7.0"
     },