diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 801885e30..6d17a0e17 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000ee12d22b76734926d936feee49998d7ba4b6f0f470fe049
-0000000000000000000000000000000000000000015c631a8d6fe1cdd010a038
+00000000000000000074e04c2d0fbbe876ce81b923a5f070ae45213343b0d98b
+0000000000000000000000000000000000000000015c6e41b6c05c74bd95e1ee
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 2f3fb4099..bf4f7321b 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000031fc6c7314da2b4b94c9a828554991e86a835c291345a8dbead08
-00000000000000000000000000000000000000000000006e9067cbe1b173d01c
+000000000427761b744b62c071b0f892a8bdd0ebae66fc5a0e077eac0f2eb142
+00000000000000000000000000000000000000000000006e9072466dc79c047e
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 408803f23..b17a1537e 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("00000000000000000ee12d22b76734926d936feee49998d7ba4b6f0f470fe049");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c631a8d6fe1cdd010a038");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000074e04c2d0fbbe876ce81b923a5f070ae45213343b0d98b");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c6e41b6c05c74bd95e1ee");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000031fc6c7314da2b4b94c9a828554991e86a835c291345a8dbead08");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9067cbe1b173d01c");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000427761b744b62c071b0f892a8bdd0ebae66fc5a0e077eac0f2eb142");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9072466dc79c047e");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants