diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -114,12 +114,12 @@
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
-            "000000000000000000000000000000000000000000e69facb8ace3926ead407c");
+            "000000000000000000000000000000000000000000e8edfe3e3b6bddc3523c75");
 
         // By default assume that the signatures in ancestors of this block are
         // valid.
         consensus.defaultAssumeValid = uint256S(
-            "000000000000000001cfa7b6cb48a93d07d8e7f474edcf4fe9b32b7525afe971");
+            "00000000000000000042fdb6b3730df1508a405ef98b1bdb857d4238b1c0a597");
 
         // August 1, 2017 hard fork
         consensus.uahfHeight = 478558;