diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index d9f1e19db..22a750df0 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000007192df8528558d134168523265c6a23e4678003b397d1e3
-0000000000000000000000000000000000000000015a67805ffc343b30629366
+000000000000000007cd5f02a0ecaa505bd47e2705f8075c60e5eb6db2b70542
+0000000000000000000000000000000000000000015a94a09e35b1bbdd8718c1
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index d4bef1ece..cc64cf2af 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000001f9d317dd7927e538dd37b7675c19595c6147496cfe160a8b22cb
-00000000000000000000000000000000000000000000006e88615b369c8dad26
+0000000000088621965147bb69c203edca8dda2c5735ca28e60628d0358e3047
+00000000000000000000000000000000000000000000006e8892426e914f313c
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 11483fede..7b4504b49 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("000000000000000007192df8528558d134168523265c6a23e4678003b397d1e3");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015a67805ffc343b30629366");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000007cd5f02a0ecaa505bd47e2705f8075c60e5eb6db2b70542");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015a94a09e35b1bbdd8718c1");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000001f9d317dd7927e538dd37b7675c19595c6147496cfe160a8b22cb");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e88615b369c8dad26");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000088621965147bb69c203edca8dda2c5735ca28e60628d0358e3047");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8892426e914f313c");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants