diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index eb2048f92..feb685648 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000001d08ff79975432db360baf9ac1ab03693a6d6a44f4c51bdd
-0000000000000000000000000000000000000000016abdaaaa269ffb9ef1cb1d
+00000000000000001d30961057463d9062ea9231811f789fd815d66cf04e07d3
+0000000000000000000000000000000000000000016ad650b96e91c0440d96df
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index afbea2d78..9061b81ac 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000068efc7855013e419456cf8aaf21e973c6466d0e0a83f06dc87bb
-00000000000000000000000000000000000000000000006eabb944f13ed4239e
+0000000000d3d9742cf5786ad0c92ab7bfc6cec30307af6319771a66719d5c78
+00000000000000000000000000000000000000000000006eabe8e642ab9b8710
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index e060e42f3..f362f3c84 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("00000000000000001d08ff79975432db360baf9ac1ab03693a6d6a44f4c51bdd");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016abdaaaa269ffb9ef1cb1d");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001d30961057463d9062ea9231811f789fd815d66cf04e07d3");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016ad650b96e91c0440d96df");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000068efc7855013e419456cf8aaf21e973c6466d0e0a83f06dc87bb");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eabb944f13ed4239e");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000d3d9742cf5786ad0c92ab7bfc6cec30307af6319771a66719d5c78");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eabe8e642ab9b8710");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants