diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index f554f55da..fa0a52b3b 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000055b2fd008cc10eb37521d5422d6ca6d5f25e26503f51f37
-000000000000000000000000000000000000000001699944c86636b1f8f7c81c
+0000000000000000077d2b3654b555e761f7668214d33031c5b79e13c067c6b5
+00000000000000000000000000000000000000000169c44563c298c981ed9c07
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index b36de28f9..c8b909050 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000015f204a43d655ebded2cde100bac495cd2209c4d5c08c6273db49
-00000000000000000000000000000000000000000000006e9ecd5d76a42b499c
+0000000005e8b8a3e04bfb6a09196e0e5392d9b44b650413822fb6d7044f7da5
+00000000000000000000000000000000000000000000006e9efa687dda922009
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index cad007ff4..944bb2772 100644
--- a/src/networks/abc/chainparamsconstants.cpp
+++ b/src/networks/abc/chainparamsconstants.cpp
@@ -1,18 +1,18 @@
 /**
  * @generated by contrib/devtools/chainparams/generate_chainparams_constants.py
  */
 
 #include <chainparamsconstants.h>
 
 namespace ChainParamsConstants {
-    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000055b2fd008cc10eb37521d5422d6ca6d5f25e26503f51f37");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001699944c86636b1f8f7c81c");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000077d2b3654b555e761f7668214d33031c5b79e13c067c6b5");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000169c44563c298c981ed9c07");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000015f204a43d655ebded2cde100bac495cd2209c4d5c08c6273db49");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9ecd5d76a42b499c");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000005e8b8a3e04bfb6a09196e0e5392d9b44b650413822fb6d7044f7da5");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9efa687dda922009");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants