diff --git a/common/defs/bitcoin/zcoin.json b/common/defs/bitcoin/zcoin.json
index cca4013ab..0d5945507 100644
--- a/common/defs/bitcoin/zcoin.json
+++ b/common/defs/bitcoin/zcoin.json
@@ -4,7 +4,7 @@
   "coin_label": "Zcoin",
   "website": "https://zcoin.io",
   "github": "https://github.com/zcoinofficial/zcoin",
-  "maintainer": "Yura Pakhuchiy <pakhuchiy@gmail.com>",
+  "maintainer": "Zcoin Team <team@zcoin.io>",
   "curve_name": "secp256k1",
   "decimals": 8,
   "address_type": 82,
@@ -42,7 +42,7 @@
   "negative_fee": false,
   "cooldown": 100,
   "consensus_branch_id": null,
-  "extra_data": false,
+  "extra_data": true,
   "timestamp": false,
   "confidential_assets": null
 }
diff --git a/common/defs/bitcoin/zcoin_testnet.json b/common/defs/bitcoin/zcoin_testnet.json
index cf01ad535..0edf18ef1 100644
--- a/common/defs/bitcoin/zcoin_testnet.json
+++ b/common/defs/bitcoin/zcoin_testnet.json
@@ -4,7 +4,7 @@
   "coin_label": "Zcoin Testnet",
   "website": "https://zcoin.io",
   "github": "https://github.com/zcoinofficial/zcoin",
-  "maintainer": "Yura Pakhuchiy <pakhuchiy@gmail.com>",
+  "maintainer": "Zcoin Team <team@zcoin.io>",
   "curve_name": "secp256k1",
   "decimals": 8,
   "address_type": 65,
@@ -40,7 +40,7 @@
   "negative_fee": false,
   "cooldown": 100,
   "consensus_branch_id": null,
-  "extra_data": false,
+  "extra_data": true,
   "timestamp": false,
   "confidential_assets": null
 }