diff --git a/src/Image/Image.php b/src/Image/Image.php
index 5bc1b7fe6a..6a5ad25a9b 100644
--- a/src/Image/Image.php
+++ b/src/Image/Image.php
@@ -76,10 +76,11 @@ public function dimensions(): Dimensions
 		}
 
 		if (in_array($this->mime(), [
+			'image/avif',
+			'image/gif',
 			'image/jpeg',
 			'image/jp2',
 			'image/png',
-			'image/gif',
 			'image/webp'
 		])) {
 			return $this->dimensions = Dimensions::forImage($this->root);