diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 19a945ce0..d33f868ab 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000a290a0dd465e3683fe251d2de65d4e94ce42e85dd2e7c8f
-00000000000000000000000000000000000000000158d24b6e3ab19ebd9f31a1
+00000000000000000ec161cb1d82d2e262bd4ff0fe0e9fa456903fa3e348eea7
+00000000000000000000000000000000000000000159020adb3709a057117567
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 1b5e7e71a..8654d7ed5 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000aea4dae96dc359067b6b58dfa5bbd2713e2a2e81d144a67fd0722
-00000000000000000000000000000000000000000000006e86ab77d25618e329
+00000000000b0ef7027583dd6d36c15972cec597914129a70109b31167568917
+00000000000000000000000000000000000000000000006e86de14ee2d576ee7
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index c7783a92d..3ac8dbbaf 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("00000000000000000a290a0dd465e3683fe251d2de65d4e94ce42e85dd2e7c8f");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000158d24b6e3ab19ebd9f31a1");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000ec161cb1d82d2e262bd4ff0fe0e9fa456903fa3e348eea7");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000159020adb3709a057117567");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000aea4dae96dc359067b6b58dfa5bbd2713e2a2e81d144a67fd0722");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e86ab77d25618e329");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000b0ef7027583dd6d36c15972cec597914129a70109b31167568917");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e86de14ee2d576ee7");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants