diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 773ea65d1..1fa6f2a31 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000007e85fde41126afe00f28bfdc326c51e4918746a27dc02bb
-0000000000000000000000000000000000000000015ce70dfe71c59971d50582
+000000000000000006c1b0b6ec41294cd529cc9104ec1ae425631da7124c40ae
+0000000000000000000000000000000000000000015d0d9c1a8c037863d20ff7
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 5f3b8d195..526edd824 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000f7b03fdb9a2a741856e731664491af74f785d1023f733415c7028
-00000000000000000000000000000000000000000000006e91048135516f9cf3
+00000000000e4e4eb252fb4b8b7a250857a779645f41a30efb745697d730dab1
+00000000000000000000000000000000000000000000006e91383d2ebcc701da
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 80930ada5..a25843115 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("000000000000000007e85fde41126afe00f28bfdc326c51e4918746a27dc02bb");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015ce70dfe71c59971d50582");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000006c1b0b6ec41294cd529cc9104ec1ae425631da7124c40ae");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015d0d9c1a8c037863d20ff7");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000f7b03fdb9a2a741856e731664491af74f785d1023f733415c7028");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91048135516f9cf3");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000e4e4eb252fb4b8b7a250857a779645f41a30efb745697d730dab1");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91383d2ebcc701da");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants