diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 81f72dc09..87929f5eb 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000105b01ab958b35f2917ae0909bc02e88f6a5e3fb14bd18cc
-00000000000000000000000000000000000000000154461150f47ad75d57ee09
+00000000000000001c1314cabb649ed94c0f933505d4d81c84bd868365383c67
+000000000000000000000000000000000000000001545379ac8f75e084ae1666
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index f36a8f7bc..3db79a5fc 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000019930ec5efcb7799652c25c8ef4543dfd84ae27ff640c7ce5de2df
-00000000000000000000000000000000000000000000006e80fe3c70b7752e29
+000000000007ecb7e0ff8946ae70bf0fd5915f3399dcc3dbc27a520d051f7d61
+00000000000000000000000000000000000000000000006e812b7407efb9f337
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 2f160e723..17db52844 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("0000000000000000105b01ab958b35f2917ae0909bc02e88f6a5e3fb14bd18cc");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154461150f47ad75d57ee09");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001c1314cabb649ed94c0f933505d4d81c84bd868365383c67");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001545379ac8f75e084ae1666");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000019930ec5efcb7799652c25c8ef4543dfd84ae27ff640c7ce5de2df");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80fe3c70b7752e29");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000007ecb7e0ff8946ae70bf0fd5915f3399dcc3dbc27a520d051f7d61");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e812b7407efb9f337");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants