diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index cd18357b6..972f553c2 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000003f873e1d939dc32e4b59f06b735d6a4848e8fc54db97058a
-00000000000000000000000000000000000000000153e9802ba062a45810a7b0
+00000000000000005ce0908e5a27e2f4c202f9f44445afff0899d254439f8480
+00000000000000000000000000000000000000000153f1c5a543971b7f71bff5
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index d936b8a4b..477fcfd01 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000335ac5fd6bb5aa611f6ed619ee3c4ec30d0dd9512cbcc8593d723
-00000000000000000000000000000000000000000000006e800651f4387a0cfc
+000000000b94431d3622a1d05fc092a9859a898c1d866e8b616483de212c3a4a
+00000000000000000000000000000000000000000000006e80379ea431ff95c0
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 289dcb39e..877ba72f3 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("00000000000000003f873e1d939dc32e4b59f06b735d6a4848e8fc54db97058a");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153e9802ba062a45810a7b0");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000005ce0908e5a27e2f4c202f9f44445afff0899d254439f8480");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153f1c5a543971b7f71bff5");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000335ac5fd6bb5aa611f6ed619ee3c4ec30d0dd9512cbcc8593d723");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e800651f4387a0cfc");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000b94431d3622a1d05fc092a9859a898c1d866e8b616483de212c3a4a");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80379ea431ff95c0");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants