diff --git a/coins.json b/coins.json
index c88806ca1f..db1e0aade7 100644
--- a/coins.json
+++ b/coins.json
@@ -16,6 +16,7 @@
 	"bip44": 0,
 	"segwit": true,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Low": 10,
 		"Economy": 70,
@@ -50,6 +51,7 @@
 	"bip44": 1,
 	"segwit": true,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -80,6 +82,7 @@
 	"bip44": 145,
 	"segwit": false,
 	"forkid": 0,
+	"force_bip143": true,
 	"default_fee_b": {
 		"Low": 10,
 		"Economy": 70,
@@ -112,6 +115,7 @@
 	"bip44": 1,
 	"segwit": false,
 	"forkid": 0,
+	"force_bip143": true,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -139,6 +143,7 @@
 	"bip44": 7,
 	"segwit": false,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -167,6 +172,7 @@
 	"bip44": 2,
 	"segwit": true,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 1000
 	},
@@ -196,6 +202,7 @@
 	"bip44": 3,
 	"segwit": false,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -223,6 +230,7 @@
 	"bip44": 5,
 	"segwit": false,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -253,6 +261,7 @@
 	"bip44": 133,
 	"segwit": false,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
@@ -282,6 +291,7 @@
 	"bip44": 1,
 	"segwit": false,
 	"forkid": null,
+	"force_bip143": false,
 	"default_fee_b": {
 		"Normal": 10
 	},
diff --git a/protob/types.proto b/protob/types.proto
index 531125681a..a6aaeee5a0 100644
--- a/protob/types.proto
+++ b/protob/types.proto
@@ -170,6 +170,7 @@ message CoinType {
 	optional uint32 xprv_magic = 10 [default=76066276];	// default=0x0488ade4
 	optional bool segwit = 11;
 	optional uint32 forkid = 12;
+	optional bool force_bip143 = 13;
 }
 
 /**