diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index cbdf3a1c0..5110215dc 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000330ef793f8321456b4d6620ef176c068e6a5a99d27d4f3db
-00000000000000000000000000000000000000000154951533e057805569b092
+00000000000000003276cf3c5d64f923c33efac20d5b4f7ffdf4f23c17ecd077
+00000000000000000000000000000000000000000154b1df9bd8a64785588e6f
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 3d175b268..b11625dfa 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000f7c0250820d6e47611e7b4c836b443d50bfd410fcaf7585c44491
-00000000000000000000000000000000000000000000006e821ba33fa27055f6
+00000000000f55782961c51c6553115582082dccb0da0b9b9111e93574ad3214
+00000000000000000000000000000000000000000000006e82ae821e73d508e5
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b83c97a19..e80d2c8f7 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("0000000000000000330ef793f8321456b4d6620ef176c068e6a5a99d27d4f3db");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154951533e057805569b092");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000003276cf3c5d64f923c33efac20d5b4f7ffdf4f23c17ecd077");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154b1df9bd8a64785588e6f");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000f7c0250820d6e47611e7b4c836b443d50bfd410fcaf7585c44491");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e821ba33fa27055f6");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000f55782961c51c6553115582082dccb0da0b9b9111e93574ad3214");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e82ae821e73d508e5");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants