diff --git a/lists.json b/lists.json
index 19e0850..3ade9c9 100755
--- a/lists.json
+++ b/lists.json
@@ -150,6 +150,7 @@
         "mackerel",
         "maine coon",
         "mammoth",
+        "mastodon",
         "mogwai",
         "mole",
         "mongoose",