diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index b367fc2ef..19a945ce0 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000ce88fc2cd2948b489dd000b7c1e864d9accc0d4efeda78b
-00000000000000000000000000000000000000000158c0517794ac3ff1cff6cf
+00000000000000000a290a0dd465e3683fe251d2de65d4e94ce42e85dd2e7c8f
+00000000000000000000000000000000000000000158d24b6e3ab19ebd9f31a1
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index fd3442e45..1b5e7e71a 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000216cf8cdae3e6b487b864cb0b3c84b4f7a94ce40375da27fb2c24
-00000000000000000000000000000000000000000000006e8697b90b4cef41ef
+00000000000aea4dae96dc359067b6b58dfa5bbd2713e2a2e81d144a67fd0722
+00000000000000000000000000000000000000000000006e86ab77d25618e329
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 49f27da76..c7783a92d 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("00000000000000000ce88fc2cd2948b489dd000b7c1e864d9accc0d4efeda78b");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000158c0517794ac3ff1cff6cf");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000a290a0dd465e3683fe251d2de65d4e94ce42e85dd2e7c8f");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000158d24b6e3ab19ebd9f31a1");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000216cf8cdae3e6b487b864cb0b3c84b4f7a94ce40375da27fb2c24");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8697b90b4cef41ef");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000aea4dae96dc359067b6b58dfa5bbd2713e2a2e81d144a67fd0722");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e86ab77d25618e329");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants