diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 571fea28c..d398022cc 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000f8cf756598e369407839cd6f0872cddb2e637939be29486
-0000000000000000000000000000000000000000015b3f8c642872d3cf173fc1
+000000000000000011e5434513736902c0fff66232b6425085b9cb5436e87c15
+0000000000000000000000000000000000000000015b6d01fcee3d5892733d23
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index b3c9f5261..62caa0eba 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000a7d3070af17e06f73468575fc342ffe041cfa0354288f2f0bf3ff14
-00000000000000000000000000000000000000000000006e8e22969595be7939
+000000000003d2ac8b6cd184d58b3afc59ca99b02605ed2eeb3980c0ec6e8f19
+00000000000000000000000000000000000000000000006e8f786ee87ed9a4df
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b1d9349a3..5c35a7e31 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("00000000000000000f8cf756598e369407839cd6f0872cddb2e637939be29486");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015b3f8c642872d3cf173fc1");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000011e5434513736902c0fff66232b6425085b9cb5436e87c15");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015b6d01fcee3d5892733d23");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000a7d3070af17e06f73468575fc342ffe041cfa0354288f2f0bf3ff14");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8e22969595be7939");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000003d2ac8b6cd184d58b3afc59ca99b02605ed2eeb3980c0ec6e8f19");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8f786ee87ed9a4df");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants