diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 8ca90c80d..ed02bbe29 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000188932c193f2dffd2023e46d1f6e314241d2593324e89019
-00000000000000000000000000000000000000000153fb27867dbbf7e47f427f
+00000000000000001f9f06b89da888cfbb697a3c06251031e46e1c5f9cab259d
+0000000000000000000000000000000000000000015406c044bc3872ea711554
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index b12ee74d6..f7b5bd907 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000fa67a52a40fd0f67ec3f9709b4b798c589638878b7ce702a5d2101f4
-00000000000000000000000000000000000000000000006e807bb8c0fa061135
+00000000000c7b66fe6212b878a1cde37b0063ebb18c85cdd419e46a780acc7b
+00000000000000000000000000000000000000000000006e80ac6f10886c0dbd
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index d6f92aac0..2dd754f3a 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("0000000000000000188932c193f2dffd2023e46d1f6e314241d2593324e89019");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153fb27867dbbf7e47f427f");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001f9f06b89da888cfbb697a3c06251031e46e1c5f9cab259d");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015406c044bc3872ea711554");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000fa67a52a40fd0f67ec3f9709b4b798c589638878b7ce702a5d2101f4");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e807bb8c0fa061135");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000c7b66fe6212b878a1cde37b0063ebb18c85cdd419e46a780acc7b");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80ac6f10886c0dbd");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants