diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 895802ca4..ea7b18c2a 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000002bd805080730f329e6b3a392dff582366cf87e18a1dfa0e0
-00000000000000000000000000000000000000000153b7ebcbf7f34bb23bad8b
+00000000000000001948df3ece247829dcfd15bbdf1f458d826a56aaecc9fb05
+00000000000000000000000000000000000000000153be406f847580a9f89c3c
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 39ec8e396..37457c380 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000064ce8f746fdbbb5dc8ffffb72eba4b314b15d2ee32577bacc12fe
-00000000000000000000000000000000000000000000006e7e7f07e2bd6f9235
+000000000000fbb917e12f7ce3d0b47d90c5c9d018e5d080f6e01c8963d888a0
+00000000000000000000000000000000000000000000006e7eb16752d57ff110
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b08f7e743..afc9e6330 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("00000000000000002bd805080730f329e6b3a392dff582366cf87e18a1dfa0e0");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153b7ebcbf7f34bb23bad8b");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001948df3ece247829dcfd15bbdf1f458d826a56aaecc9fb05");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153be406f847580a9f89c3c");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000064ce8f746fdbbb5dc8ffffb72eba4b314b15d2ee32577bacc12fe");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7e7f07e2bd6f9235");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000fbb917e12f7ce3d0b47d90c5c9d018e5d080f6e01c8963d888a0");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7eb16752d57ff110");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants