diff --git a/contents.json b/contents.json
index cd7ad465a616..227e4ca93e26 100644
--- a/contents.json
+++ b/contents.json
@@ -27610,7 +27610,7 @@
       "tags": [
         "flutter",
         "dart",
-        "adult"
+        "adult", "archive"
       ],
       "license": "apache-2.0",
       "date_added": "Nov 9 2021",