diff --git a/README.md b/README.md
index ee0cd7d..f513bfd 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Nova Inline Relationship allows you to manage (add/edit/update/delete/reorder) a
 
 ## Requirements
 
-This package requires Laravel Nova 4.0.
+This package requires Laravel Nova 5.0.
 
 ## Installation
 
diff --git a/src/Helpers/Fluent.php b/src/Helpers/Fluent.php
index 79d03d9..8cfd802 100644
--- a/src/Helpers/Fluent.php
+++ b/src/Helpers/Fluent.php
@@ -14,8 +14,13 @@ class Fluent extends \Illuminate\Support\Fluent
      *
      * @return $this
      */
-    public function fill(array $attributes)
+    public function fill($attributes)
     {
+        // Ensure attributes is an array for Laravel 12 compatibility
+        if (!is_array($attributes)) {
+            $attributes = (array) $attributes;
+        }
+
         foreach ($attributes as $key => $value) {
             $attribute = Str::replace('->', '.', $key);
 
diff --git a/src/NovaInlineRelationship.php b/src/NovaInlineRelationship.php
index 5f5761a..6160296 100644
--- a/src/NovaInlineRelationship.php
+++ b/src/NovaInlineRelationship.php
@@ -91,7 +91,7 @@ public function sortUsing(string $sortUsing): self
      *
      * @return void
      */
-    public function resolveForDisplay($resource, $attribute = null)
+    public function resolveForDisplay($resource, ?string $attribute = null): void
     {
         parent::resolveForDisplay($resource, $attribute);
 
@@ -110,7 +110,7 @@ public function resolveForDisplay($resource, $attribute = null)
      *
      * @return void
      */
-    public function resolve($resource, $attribute = null)
+    public function resolve($resource, ?string $attribute = null): void
     {
         parent::resolve($resource, $attribute);
 
diff --git a/src/NovaInlineRelationshipRequest.php b/src/NovaInlineRelationshipRequest.php
index b35ef9d..7abc1d9 100644
--- a/src/NovaInlineRelationshipRequest.php
+++ b/src/NovaInlineRelationshipRequest.php
@@ -55,7 +55,18 @@ public static function createFrom(Request $from, $to = null)
 
         try {
             $session = $from->getSession();
-            $request->setLaravelSession($session);
+
+            // Laravel 12 compatibility fix: Handle SymfonySessionDecorator properly
+            if ($session instanceof \Illuminate\Session\SymfonySessionDecorator) {
+                // Extract the underlying session store from the decorator
+                $reflector = new \ReflectionClass($session);
+                $storeProperty = $reflector->getProperty('store');
+                $storeProperty->setAccessible(true);
+                $actualSession = $storeProperty->getValue($session);
+                $request->setLaravelSession($actualSession);
+            } else {
+                $request->setLaravelSession($session);
+            }
         } catch (SessionNotFoundException $exception) {
             // do nothing
         }