diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 6b62742d9..ed232eb03 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000023996441b2a26725dfcdc1cf6392b935ae2e5323dd5b14d7
-0000000000000000000000000000000000000000015428d0aea17865fa1b44cd
+000000000000000013dd92c3d39846d8363fefd54fb78eb2a1a68886bfa7726f
+00000000000000000000000000000000000000000154368ca7cfaf045e903cb3
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 1ff65ae46..bc61afd8f 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000095957a145d994795306ec4e2b932ac86024da29a8f901922d133b
-00000000000000000000000000000000000000000000006e80d220fe58114e80
+00000000000197f27596384671b5b914359f9fdf41dcb1674303407dacd3a7c4
+00000000000000000000000000000000000000000000006e80d22134f747ba0d
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 5baecfcc8..f2cb18361 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("000000000000000023996441b2a26725dfcdc1cf6392b935ae2e5323dd5b14d7");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015428d0aea17865fa1b44cd");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000013dd92c3d39846d8363fefd54fb78eb2a1a68886bfa7726f");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000154368ca7cfaf045e903cb3");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000095957a145d994795306ec4e2b932ac86024da29a8f901922d133b");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80d220fe58114e80");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000197f27596384671b5b914359f9fdf41dcb1674303407dacd3a7c4");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80d22134f747ba0d");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants