diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 5110215dc..79402ec62 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000003276cf3c5d64f923c33efac20d5b4f7ffdf4f23c17ecd077
-00000000000000000000000000000000000000000154b1df9bd8a64785588e6f
+00000000000000002131b9001bfd67c8afd6fc7633d28324685d94b746eb6598
+00000000000000000000000000000000000000000154b9e11a90f841f4732525
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index b11625dfa..84d464d02 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000f55782961c51c6553115582082dccb0da0b9b9111e93574ad3214
-00000000000000000000000000000000000000000000006e82ae821e73d508e5
+00000000078b2485d403aac12ccf1c933d7eb3c23a3eab463ce15012de7de7b5
+00000000000000000000000000000000000000000000006e82de3faed7bf4b86
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index e80d2c8f7..dac2a748f 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("00000000000000003276cf3c5d64f923c33efac20d5b4f7ffdf4f23c17ecd077");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154b1df9bd8a64785588e6f");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000002131b9001bfd67c8afd6fc7633d28324685d94b746eb6598");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154b9e11a90f841f4732525");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000f55782961c51c6553115582082dccb0da0b9b9111e93574ad3214");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e82ae821e73d508e5");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000078b2485d403aac12ccf1c933d7eb3c23a3eab463ce15012de7de7b5");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e82de3faed7bf4b86");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants