diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index 60bea886..ac191e1f 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -92,16 +92,15 @@ main.checkpointMap = {
   250000: '14d2f24d29bed75354f3f88a5fb50022fc064b02291fdf873800000000000000',
   279000: '407ebde958e44190fa9e810ea1fc3a7ef601c3b0a0728cae0100000000000000',
   295000: '83a93246c67003105af33ae0b29dd66f689d0f0ff54e9b4d0000000000000000',
-  // Checkpoints from btcd:
   300255: 'b2f3a0f0de4120c1089d5f5280a263059f9b6e7c520428160000000000000000',
   319400: '3bf115fd057391587ca39a531c5d4989e1adec9b2e05c6210000000000000000',
   343185: '548536d48e7678fcfa034202dd45d4a76b1ad061f38b2b070000000000000000',
   352940: 'ffc9520143e41c94b6e03c2fa3e62bb76b55ba2df45d75100000000000000000',
   382320: 'b28afdde92b0899715e40362f56afdb20e3d135bedc68d0a0000000000000000',
-  // Custom checkpoints
   401465: 'eed16cb3e893ed9366f27c39a9ecd95465d02e3ef40e45010000000000000000',
   420000: 'a1ff746b2d42b834cb7d6b8981b09c265c2cabc016e8cc020000000000000000',
-  440000: '9bf296b8de5f834f7635d5e258a434ad51b4dbbcf7c08c030000000000000000'
+  440000: '9bf296b8de5f834f7635d5e258a434ad51b4dbbcf7c08c030000000000000000',
+  450000: '0ba2070c62cd9da1f8cef88a0648c661a411d33e728340010000000000000000'
 };
 
 /**
@@ -182,7 +181,7 @@ main.pow = {
    */
 
   chainwork: new BN(
-    '0000000000000000000000000000000000000000003a315fa3a5ef47f4384cf2',
+    '00000000000000000000000000000000000000000045b494a5d30a82d9a52ff4',
     'hex'
   ),
 
@@ -532,7 +531,7 @@ testnet.pow = {
   ),
   bits: 486604799,
   chainwork: new BN(
-    '00000000000000000000000000000000000000000000001e345893fa639796e9',
+    '000000000000000000000000000000000000000000000020291512942d3765fe',
     'hex'
   ),
   targetTimespan: 14 * 24 * 60 * 60,