diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 40f84d719..03086c660 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000012e1e03623602d4f9ffd59701bf05ffd11a6adeb6aa4b03f
-0000000000000000000000000000000000000000015c0ae8f48e7ef52e5b82ec
+00000000000000000d444a6bc35837e7ccc811a16de9356eed7a0f4eb52444fe
+0000000000000000000000000000000000000000015c0de8e68de602b10d82d2
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 483b53214..dfb2f9987 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000007afd82c6d2331e9b766b12575cd21f86630c7017a6341797fa987dc
-00000000000000000000000000000000000000000000006e900e38125c08d0ef
+00000000175f0636dc80ff43cdfc1a20e73fecf96cdf06a408970701ae2d006f
+00000000000000000000000000000000000000000000006e9010a8d9aede2ce7
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index cf143314e..14407f60a 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("000000000000000012e1e03623602d4f9ffd59701bf05ffd11a6adeb6aa4b03f");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c0ae8f48e7ef52e5b82ec");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000d444a6bc35837e7ccc811a16de9356eed7a0f4eb52444fe");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c0de8e68de602b10d82d2");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000007afd82c6d2331e9b766b12575cd21f86630c7017a6341797fa987dc");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e900e38125c08d0ef");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000175f0636dc80ff43cdfc1a20e73fecf96cdf06a408970701ae2d006f");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9010a8d9aede2ce7");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants