diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 1b08b3fdd..eb2048f92 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000e31a1a0f75e7f29770eb3ff3614df47d1190862f4fd3e54
-0000000000000000000000000000000000000000016aa40acdcc2afe19a002b3
+00000000000000001d08ff79975432db360baf9ac1ab03693a6d6a44f4c51bdd
+0000000000000000000000000000000000000000016abdaaaa269ffb9ef1cb1d
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 347431e26..afbea2d78 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000001cc3db476e51cc65b9ef700b0c31e33ab9666db739a30accfcf61
-00000000000000000000000000000000000000000000006eab8b565d0d16e8ee
+00000000000068efc7855013e419456cf8aaf21e973c6466d0e0a83f06dc87bb
+00000000000000000000000000000000000000000000006eabb944f13ed4239e
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 05d312c15..e060e42f3 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("00000000000000000e31a1a0f75e7f29770eb3ff3614df47d1190862f4fd3e54");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016aa40acdcc2afe19a002b3");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001d08ff79975432db360baf9ac1ab03693a6d6a44f4c51bdd");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016abdaaaa269ffb9ef1cb1d");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000001cc3db476e51cc65b9ef700b0c31e33ab9666db739a30accfcf61");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eab8b565d0d16e8ee");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000068efc7855013e419456cf8aaf21e973c6466d0e0a83f06dc87bb");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eabb944f13ed4239e");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants