diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 3262f4e54..2e5eaeb4c 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000e325399eab26ecac1e5acf09ec1de64196a56a14acb158c
-0000000000000000000000000000000000000000016b1e89ca85e24bc2df9b98
+00000000000000002477a74b071f148ebbc50ee0258381523d9775afeb9e8a66
+0000000000000000000000000000000000000000016b3a9634fdaf164aa03782
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 13a12e617..f154e7d54 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000046888ab3d3dfb6e5580aeb31443ea86028160492c738b425b930e
-00000000000000000000000000000000000000000000006eac7fb15613331338
+000000000004d9202d387519cf94fb6cebb916f8244ff3a8db42c1a1c9aa43af
+00000000000000000000000000000000000000000000006eacaf65c612dcd5ba
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 972fc7961..a5699a0e6 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("00000000000000000e325399eab26ecac1e5acf09ec1de64196a56a14acb158c");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016b1e89ca85e24bc2df9b98");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000002477a74b071f148ebbc50ee0258381523d9775afeb9e8a66");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016b3a9634fdaf164aa03782");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000046888ab3d3dfb6e5580aeb31443ea86028160492c738b425b930e");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eac7fb15613331338");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000004d9202d387519cf94fb6cebb916f8244ff3a8db42c1a1c9aa43af");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eacaf65c612dcd5ba");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants