diff --git a/ckeditor/image/pillow_backend.py b/ckeditor/image/pillow_backend.py
index a888c5c..26bcd62 100644
--- a/ckeditor/image/pillow_backend.py
+++ b/ckeditor/image/pillow_backend.py
@@ -40,7 +40,7 @@ def create_thumbnail(file_path):
         image = image.convert('RGB')
 
     # scale and crop to thumbnail
-    imagefit = ImageOps.fit(image, THUMBNAIL_SIZE, Image.ANTIALIAS)
+    imagefit = ImageOps.fit(image, THUMBNAIL_SIZE, Image.Resampling.LANCZOS)
     thumbnail_io = BytesIO()
     imagefit.save(thumbnail_io, format=file_format)