diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 03086c660..ca35cd3c5 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000d444a6bc35837e7ccc811a16de9356eed7a0f4eb52444fe
-0000000000000000000000000000000000000000015c0de8e68de602b10d82d2
+0000000000000000020875b73577bbdaeb7372889f7e559a0c821af5d64c247c
+0000000000000000000000000000000000000000015c40084ec198ac4e605e27
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index dfb2f9987..d4b78544b 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000175f0636dc80ff43cdfc1a20e73fecf96cdf06a408970701ae2d006f
-00000000000000000000000000000000000000000000006e9010a8d9aede2ce7
+000000000000f9a15b85d4706e0f31caae748c770ff7ece0786c21cc93adec9c
+00000000000000000000000000000000000000000000006e903feaf4694eb89a
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 14407f60a..5daa90156 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("00000000000000000d444a6bc35837e7ccc811a16de9356eed7a0f4eb52444fe");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c0de8e68de602b10d82d2");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000020875b73577bbdaeb7372889f7e559a0c821af5d64c247c");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c40084ec198ac4e605e27");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000175f0636dc80ff43cdfc1a20e73fecf96cdf06a408970701ae2d006f");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9010a8d9aede2ce7");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000f9a15b85d4706e0f31caae748c770ff7ece0786c21cc93adec9c");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e903feaf4694eb89a");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants