diff --git a/common/defs/bitcoin/bitzeny.json b/common/defs/bitcoin/bitzeny.json
index 6e3d53b157..5febe9a105 100644
--- a/common/defs/bitcoin/bitzeny.json
+++ b/common/defs/bitcoin/bitzeny.json
@@ -4,7 +4,7 @@
   "coin_label": "BitZeny",
   "website": "https://bitzeny.tech",
   "github": "https://github.com/BitzenyCoreDevelopers/bitzeny",
-  "maintainer": "y-chan <yuto_tetuota@yahoo.co.jp>",
+  "maintainer": "y-chan <y_chan_crypto@yahoo.co.jp>",
   "curve_name": "secp256k1",
   "decimals": 8,
   "address_type": 81,
diff --git a/common/defs/bitcoin/vipstarcoin.json b/common/defs/bitcoin/vipstarcoin.json
index 3e2a179ac3..7ebb245c69 100644
--- a/common/defs/bitcoin/vipstarcoin.json
+++ b/common/defs/bitcoin/vipstarcoin.json
@@ -4,7 +4,7 @@
   "coin_label": "VIPSTARCOIN",
   "website": "https://vipstarcoin.jp",
   "github": "https://github.com/VIPSTARCOIN/VIPSTARCOIN",
-  "maintainer": "y-chan <yuto_tetuota@yahoo.co.jp>",
+  "maintainer": "y-chan <y_chan_crypto@yahoo.co.jp>",
   "curve_name": "secp256k1",
   "decimals": 8,
   "address_type": 70,