diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 01a8b28c1..773ea65d1 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000117629462f885360fc54ec95d12d9520d0b8f94dfada80c4
-0000000000000000000000000000000000000000015cbe3977b34d80426d66e7
+000000000000000007e85fde41126afe00f28bfdc326c51e4918746a27dc02bb
+0000000000000000000000000000000000000000015ce70dfe71c59971d50582
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index c88da5b5a..5f3b8d195 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000000ad7dba7d4b9ecb164df18c2ee2fda3f87f863538adbbdc879039
-00000000000000000000000000000000000000000000006e90d30ce7af38d7ce
+00000000000f7b03fdb9a2a741856e731664491af74f785d1023f733415c7028
+00000000000000000000000000000000000000000000006e91048135516f9cf3
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b5a140569..80930ada5 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("0000000000000000117629462f885360fc54ec95d12d9520d0b8f94dfada80c4");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015cbe3977b34d80426d66e7");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000007e85fde41126afe00f28bfdc326c51e4918746a27dc02bb");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015ce70dfe71c59971d50582");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000ad7dba7d4b9ecb164df18c2ee2fda3f87f863538adbbdc879039");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e90d30ce7af38d7ce");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000f7b03fdb9a2a741856e731664491af74f785d1023f733415c7028");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91048135516f9cf3");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants