diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 9d7a1c31f..b744d7035 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000001060f8126e4317508c45834ffaa16bdb7a69dee4b6a1d572
-0000000000000000000000000000000000000000015db4a9b99be9792187779e
+0000000000000000095bcdbe2dc4dd86880fdf1ac8b5fb18789167794bcdc7ff
+0000000000000000000000000000000000000000015dbe8716133bf777ad6f40
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 8f8f16373..6310af97f 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000b370976bd40f2cb7950ca306e29b311c91114a60bfb9a088bbf39
-00000000000000000000000000000000000000000000006e91f366407b377e3e
+000000000007f86e6fd792cf89f896cc7fa852d23b2a1a85e16788824953ffd5
+00000000000000000000000000000000000000000000006e91ff7d50c9d155b5
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 3482e85e8..d1510af59 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("00000000000000001060f8126e4317508c45834ffaa16bdb7a69dee4b6a1d572");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015db4a9b99be9792187779e");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000095bcdbe2dc4dd86880fdf1ac8b5fb18789167794bcdc7ff");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015dbe8716133bf777ad6f40");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000b370976bd40f2cb7950ca306e29b311c91114a60bfb9a088bbf39");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91f366407b377e3e");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000007f86e6fd792cf89f896cc7fa852d23b2a1a85e16788824953ffd5");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91ff7d50c9d155b5");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants