diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -115,12 +115,12 @@
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
-            "000000000000000000000000000000000000000000def4345931d03e6e4faf78");
+            "000000000000000000000000000000000000000000e0b99c3ca2b0595b88b4ca");
 
         // By default assume that the signatures in ancestors of this block are
         // valid.
         consensus.defaultAssumeValid = uint256S(
-            "000000000000000003aadeae9dee37b8cb4838a866dae19b54854a0f039b03e0");
+            "0000000000000000039a32312af471d194d979da593f55f0f8f2680b7e2aea06");
 
         // August 1, 2017 hard fork
         consensus.uahfHeight = 478558;
@@ -289,12 +289,12 @@
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
-            "0000000000000000000000000000000000000000000000416ad051088ff75074");
+            "000000000000000000000000000000000000000000000043cb761ba833f844c5");
 
         // By default assume that the signatures in ancestors of this block are
         // valid.
         consensus.defaultAssumeValid = uint256S(
-            "000000000000030bee568d677b6b99ee7d2d00b25d1fe95df5e73b484f00c322");
+            "00000000000002cb911c0a756a24c2fe6c1a29acaede3569ce430b95d8ff012d");
 
         // August 1, 2017 hard fork
         consensus.uahfHeight = 1155875;