diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index cf3b95627..d188a1fc1 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000035571d03330a6a5f9e36dc6b279c1e269f5c8bd1b8f9333
-0000000000000000000000000000000000000000016916c574b4e382c788daf9
+000000000000000003ac9093485db988fb8cfc07c6d6ad1f6268306206aa0ad3
+00000000000000000000000000000000000000000169424d72c0401d88798998
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 30c66f0cc..222e86fff 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000001ef45e07fc7d2918c689a7e995fba24124ecc0f449632b17554eec1
-00000000000000000000000000000000000000000000006e9e42b8468784a16e
+000000000002607a5f86dc7df05e9a1bc6d14b1ff3014805058019d902891236
+00000000000000000000000000000000000000000000006e9e6fad73f91fd528
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 65672a632..4e12cf426 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("0000000000000000035571d03330a6a5f9e36dc6b279c1e269f5c8bd1b8f9333");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016916c574b4e382c788daf9");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000003ac9093485db988fb8cfc07c6d6ad1f6268306206aa0ad3");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000169424d72c0401d88798998");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000001ef45e07fc7d2918c689a7e995fba24124ecc0f449632b17554eec1");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9e42b8468784a16e");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000002607a5f86dc7df05e9a1bc6d14b1ff3014805058019d902891236");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9e6fad73f91fd528");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants