diff --git a/03-error-handler.md b/03-error-handler.md
index 401762c..4429df6 100644
--- a/03-error-handler.md
+++ b/03-error-handler.md
@@ -14,8 +14,8 @@ To install a new package, open up your `composer.json` and add the package to th
 
 ```php
 "require": {
-    "php": ">=5.5.0",
-    "filp/whoops": ">=1.1.2"
+    "php": ">=7.0.0",
+    "filp/whoops": "~2.1"
 },
 ```