diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index cc37a7379..1368536d3 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000daf22eb18855c8d932419572ce1b04fd06d9aed2c9e1f62
-0000000000000000000000000000000000000000015df007162c986db9a36a09
+0000000000000000067fdeb80f45b954085579cbb18910730cf226141f609cbf
+0000000000000000000000000000000000000000015e1bbaae1e9ac45fab22a1
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 25935ee3b..b5a9236c3 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000025e1f20be2a543b7460e40588b218bced8ab64763dc7df7ff476
-00000000000000000000000000000000000000000000006e9230a8ff441df190
+0000000000f6d6c5662cadd6271c0bdd7a9f45fccd0d168966a38e6eb13e8c3d
+00000000000000000000000000000000000000000000006e9261cdb07ac4c7c0
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 8e76267b0..b09484419 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("00000000000000000daf22eb18855c8d932419572ce1b04fd06d9aed2c9e1f62");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015df007162c986db9a36a09");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000067fdeb80f45b954085579cbb18910730cf226141f609cbf");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015e1bbaae1e9ac45fab22a1");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000025e1f20be2a543b7460e40588b218bced8ab64763dc7df7ff476");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9230a8ff441df190");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000f6d6c5662cadd6271c0bdd7a9f45fccd0d168966a38e6eb13e8c3d");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9261cdb07ac4c7c0");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants