diff --git a/src/Filesystem/AbstractAdapter.php b/src/Filesystem/AbstractAdapter.php
index 1a803fa87c..bcb7218ee7 100644
--- a/src/Filesystem/AbstractAdapter.php
+++ b/src/Filesystem/AbstractAdapter.php
@@ -100,7 +100,7 @@ public function isImage($path)
     {
         return in_array(
             strtolower($this->extension($path)),
-            ['jpg', 'jpeg', 'png', 'gif']
+            ['jpg', 'jpeg', 'png', 'gif', 'webp', 'avif']
         );
     }
 
diff --git a/tests/Imaging/ImageValidatorTest.php b/tests/Imaging/ImageValidatorTest.php
index 0d18443940..81d74b0e0e 100644
--- a/tests/Imaging/ImageValidatorTest.php
+++ b/tests/Imaging/ImageValidatorTest.php
@@ -20,7 +20,7 @@ public function it_checks_if_image_has_valid_extension_and_mimetype()
         ]]);
 
         // We'll test `isValidExtension()` functionality separately below, and just mock here...
-        ImageValidator::shouldReceive('isValidExtension')->andReturnTrue()->times(23);
+        ImageValidator::shouldReceive('isValidExtension')->andReturnTrue()->times(24);
         ImageValidator::makePartial();
 
         $this->assertTrue(ImageValidator::isValidImage('jpg', 'image/jpeg'));