diff --git a/lib/f56/bills.js b/lib/f56/bills.js
index f650d6ee0..34105b5f2 100644
--- a/lib/f56/bills.js
+++ b/lib/f56/bills.js
@@ -371,6 +371,17 @@ module.exports = {
     },
     polymer: false
   },
+  TTD: {
+    thickness: 0x0c,
+    lengths: {
+      1: [0xa1, 0x97],
+      5: [0xa1, 0x97],
+      10: [0xa1, 0x97],
+      20: [0xa1, 0x97],
+      100: [0xa1, 0x97],
+    },
+    polymer: true
+  },
   TWD: {
     thickness: 0x0d,
     lengths: {
@@ -430,4 +441,4 @@ module.exports = {
     },
     polymer: false
   }
-}
\ No newline at end of file
+}