diff --git a/Override/ImageResize.php b/Override/ImageResize.php
index 3772029..345e6c5 100644
--- a/Override/ImageResize.php
+++ b/Override/ImageResize.php
@@ -280,6 +280,8 @@ private function getViewImages(array $themes): array
         return $viewImages;
     }
 
+
+
     /**
      * Get unique image index.
      *
@@ -291,7 +293,7 @@ private function getUniqueImageIndex(array $imageData): string
         ksort($imageData);
         unset($imageData['type']);
         // phpcs:disable Magento2.Security.InsecureFunction
-        return md5(json_encode($imageData));
+        return hash('sha256', json_encode($imageData));
     }
 
     /**