diff --git a/video_metadata/views/tmdb.py b/video_metadata/views/tmdb.py
index d714f5c..8fbafde 100644
--- a/video_metadata/views/tmdb.py
+++ b/video_metadata/views/tmdb.py
@@ -73,6 +73,9 @@ class view_result:
     poster_path: str = 'no_image.png'
     tmdb_link: str = ''
 
+# TODO: flask 1.1 adds support for JSON encoding dataclasses
+#   https://palletsprojects.com/blog/flask-1-1-released/
+#   add flask 1.1 to requirements when alpine distro updates flask
 # NOTE: haven't found a better way to json encode dataclasses :(
 class result_encoder(json.JSONEncoder):
     def default(self, obj):