diff --git a/composer.json b/composer.json
index 951fc70..67faec8 100644
--- a/composer.json
+++ b/composer.json
@@ -1,5 +1,5 @@
 {
-  "name": "dusank/knapsack",
+  "name": "martinvenus/knapsack",
   "license": "MIT",
   "type": "library",
   "description": "Collection library for PHP",
diff --git a/src/Collection.php b/src/Collection.php
index f8037a0..467b2b7 100644
--- a/src/Collection.php
+++ b/src/Collection.php
@@ -95,6 +95,7 @@ public static function range($start = 0, $end = null, $step = 1)
      * {@inheritdoc}
      * @throws InvalidReturnValue
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         if ($this->inputFactory) {
@@ -131,6 +132,18 @@ function ($value, $key) {
         );
     }
 
+    public function __serialize()
+    {
+        return toArray(
+            map(
+                $this->input,
+                function ($value, $key) {
+                    return [$key, $value];
+                }
+            )
+        );
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -138,4 +151,9 @@ public function unserialize($serialized)
     {
         $this->input = dereferenceKeyValue(unserialize($serialized));
     }
+
+    public function __unserialize($data)
+    {
+        $this->input = dereferenceKeyValue($data);
+    }
 }