diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index d8eed7d6..aee4ac5c 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -749,20 +749,20 @@ regtest.deploys = [
 ];
 
 regtest.keyPrefix = {
-  privkey: 0xef,
-  xpubkey: 0x043587cf,
-  xprivkey: 0x04358394,
-  xprivkey58: 'tprv',
-  xpubkey58: 'tpub',
+  privkey: 0x5a,
+  xpubkey: 0xeab4fa05,
+  xprivkey: 0xeab404c7,
+  xprivkey58: 'rprv',
+  xpubkey58: 'rpub',
   coinType: 1
 };
 
 regtest.addressPrefix = {
-  pubkeyhash: 0x6f,
-  scripthash: 0xc4,
-  witnesspubkeyhash: 0x03,
-  witnessscripthash: 0x28,
-  bech32: 'tb'
+  pubkeyhash: 0x3c,
+  scripthash: 0x26,
+  witnesspubkeyhash: 0x7a,
+  witnessscripthash: 0x14,
+  bech32: 'rb'
 };
 
 regtest.requireStandard = false;
@@ -904,7 +904,7 @@ segnet4.addressPrefix = {
   scripthash: 0x32,
   witnesspubkeyhash: 0x03,
   witnessscripthash: 0x28,
-  bech32: 'tb'
+  bech32: 'sg'
 };
 
 segnet4.requireStandard = false;
@@ -1054,7 +1054,7 @@ simnet.addressPrefix = {
   scripthash: 0x7b,
   witnesspubkeyhash: 0x19,
   witnessscripthash: 0x28,
-  bech32: 'tb'
+  bech32: 'sc'
 };
 
 simnet.requireStandard = false;