diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -105,12 +105,12 @@
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
-            "000000000000000000000000000000000000000000f92d4e82cbb731b943253b");
+            "000000000000000000000000000000000000000000fb3f4a1b1be99638d82790");
 
         // By default assume that the signatures in ancestors of this block are
         // valid.
         consensus.defaultAssumeValid = uint256S(
-            "0000000000000000030fa94e7636ddb0bb6083d8dfa6361412142e1d45033bf3");
+            "000000000000000001beee8cc62754955b00233585d2c14ae26d0f3a5d1fb708");
 
         // August 1, 2017 hard fork
         consensus.uahfHeight = 478558;