diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 6d17a0e17..17e3c0896 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000074e04c2d0fbbe876ce81b923a5f070ae45213343b0d98b
-0000000000000000000000000000000000000000015c6e41b6c05c74bd95e1ee
+000000000000000015ef9c8a93265c1512ba38a7fad3c3861f64c4fe2ae57cee
+0000000000000000000000000000000000000000015c9866237807beaff2252d
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index bf4f7321b..49d72f39f 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000427761b744b62c071b0f892a8bdd0ebae66fc5a0e077eac0f2eb142
-00000000000000000000000000000000000000000000006e9072466dc79c047e
+0000000003225bbfd8c535d5928bdfa9d10f675105d7e644109d7dd3447d967d
+00000000000000000000000000000000000000000000006e90a4dc721c9169f8
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b17a1537e..097280b91 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("00000000000000000074e04c2d0fbbe876ce81b923a5f070ae45213343b0d98b");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c6e41b6c05c74bd95e1ee");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000015ef9c8a93265c1512ba38a7fad3c3861f64c4fe2ae57cee");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c9866237807beaff2252d");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000427761b744b62c071b0f892a8bdd0ebae66fc5a0e077eac0f2eb142");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9072466dc79c047e");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000003225bbfd8c535d5928bdfa9d10f675105d7e644109d7dd3447d967d");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e90a4dc721c9169f8");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants