diff --git a/horizon.md b/horizon.md
index 0111f78f1..f954d322f 100644
--- a/horizon.md
+++ b/horizon.md
@@ -24,7 +24,7 @@ All of your worker configuration is stored in a single, simple configuration fil
 
 You may use Composer to install Horizon into your Laravel project:
 
-    composer require laravel/horizon
+    composer require laravel/horizon "^2.0"
 
 After installing Horizon, publish its assets using the `vendor:publish` Artisan command: