diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index d33f868ab..83fe7192d 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000ec161cb1d82d2e262bd4ff0fe0e9fa456903fa3e348eea7
-00000000000000000000000000000000000000000159020adb3709a057117567
+000000000000000011abdb3d41a79790d18d1ca8e2d80b0a51b95a9cfc52b133
+000000000000000000000000000000000000000001592f908c627bf282e40b2d
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 8654d7ed5..4bab74f9d 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000b0ef7027583dd6d36c15972cec597914129a70109b31167568917
-00000000000000000000000000000000000000000000006e86de14ee2d576ee7
+0000000008ad9bd39b2667bc0af89b60bf83838982e2ae07dbf1f870893781c3
+00000000000000000000000000000000000000000000006e870e01f7a4fe203c
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 3ac8dbbaf..1b89cbdc5 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("00000000000000000ec161cb1d82d2e262bd4ff0fe0e9fa456903fa3e348eea7");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000159020adb3709a057117567");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000011abdb3d41a79790d18d1ca8e2d80b0a51b95a9cfc52b133");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001592f908c627bf282e40b2d");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000b0ef7027583dd6d36c15972cec597914129a70109b31167568917");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e86de14ee2d576ee7");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000008ad9bd39b2667bc0af89b60bf83838982e2ae07dbf1f870893781c3");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e870e01f7a4fe203c");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants