diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 96148824d..151a9b32d 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000c6d5fdbbe411664a4b585871c6495c707c61d5d08fd4dba
-00000000000000000000000000000000000000000168a01c82b5546ee81ffe75
+000000000000000006ab002104338ebb1961b3c5c64829bbf654d195f95277f0
+00000000000000000000000000000000000000000168c90d7425fad8adb6a474
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index cd2776ac0..6ca4889be 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000f7ebe3c108316512249e9886142ec093c0825e02a75ccf4b26baeea
-00000000000000000000000000000000000000000000006e9db8849bfda3285d
+00000000001021b1d425f7053a3019b748d8a0ec66babc39830c8e8cbfb390a3
+00000000000000000000000000000000000000000000006e9de719cd2ab95ed3
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 611ff85aa..806544014 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("00000000000000000c6d5fdbbe411664a4b585871c6495c707c61d5d08fd4dba");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000168a01c82b5546ee81ffe75");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000006ab002104338ebb1961b3c5c64829bbf654d195f95277f0");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000168c90d7425fad8adb6a474");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000f7ebe3c108316512249e9886142ec093c0825e02a75ccf4b26baeea");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9db8849bfda3285d");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000001021b1d425f7053a3019b748d8a0ec66babc39830c8e8cbfb390a3");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9de719cd2ab95ed3");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants