diff --git a/src/SeoManager.php b/src/SeoManager.php
index 8943345..c8d1626 100644
--- a/src/SeoManager.php
+++ b/src/SeoManager.php
@@ -274,11 +274,24 @@ public function setLocale(
     }
 
     /**
-     * @param  null|Alternate[]  $value
+     * @param  null|Alternate[]|array<string, string>  $value
      * @return $this
      */
     public function setAlternates(?array $value): static
     {
+        if ($value) {
+            $value = collect($value)
+                ->map(function ($href, $hrelang) {
+                    if ($href instanceof Alternate) {
+                        return $href;
+                    }
+
+                    return new Alternate($hrelang, $href);
+                })
+                ->values()
+                ->all();
+        }
+
         if ($this->standard) {
             $this->standard->alternates = $value;
         }
diff --git a/tests/Units/SeoManagerTest.php b/tests/Units/SeoManagerTest.php
index 1c9999e..cfd1dc1 100644
--- a/tests/Units/SeoManagerTest.php
+++ b/tests/Units/SeoManagerTest.php
@@ -133,3 +133,26 @@
     expect($clone->customTags[0])->not->toBe($base->customTags[0]);
     expect($clone->customTags[0]->properties)->not->toBe($base->customTags[0]->properties);
 });
+
+it('can set alternates using assoc array', function () {
+    $manager = new SeoManager(
+        standard: new Standard(
+            title: 'foo',
+            canonical: 'bar',
+        ),
+        opengraph: new OpenGraph(
+            title: 'foo',
+            url: 'bar',
+        ),
+    );
+
+    $manager->setAlternates([
+        'fr' => 'example.com/fr',
+        'en' => 'example.com/en',
+        'x-default' => 'example.com/en',
+    ]);
+
+    expect($manager->standard->alternates)->toHaveLength(3);
+    expect($manager->standard->alternates[0]->hreflang)->toBe('fr');
+    expect($manager->standard->alternates[0]->href)->toBe('example.com/fr');
+});