diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 17e3c0896..2bc7dd071 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000015ef9c8a93265c1512ba38a7fad3c3861f64c4fe2ae57cee
-0000000000000000000000000000000000000000015c9866237807beaff2252d
+00000000000000000d1789bf5cddd105c6bfbb663c75bb0c168e8e3fab480ee2
+0000000000000000000000000000000000000000015cad57554c78f925bb8158
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 49d72f39f..a031376d8 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000003225bbfd8c535d5928bdfa9d10f675105d7e644109d7dd3447d967d
-00000000000000000000000000000000000000000000006e90a4dc721c9169f8
+000000000009aa34b8a1d2868634d9df03a47c8b6f733fcc0ddcf4c92f3db0bb
+00000000000000000000000000000000000000000000006e90c18fe2fd033895
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 097280b91..c5daa86cc 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("000000000000000015ef9c8a93265c1512ba38a7fad3c3861f64c4fe2ae57cee");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c9866237807beaff2252d");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000d1789bf5cddd105c6bfbb663c75bb0c168e8e3fab480ee2");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015cad57554c78f925bb8158");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000003225bbfd8c535d5928bdfa9d10f675105d7e644109d7dd3447d967d");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e90a4dc721c9169f8");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000009aa34b8a1d2868634d9df03a47c8b6f733fcc0ddcf4c92f3db0bb");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e90c18fe2fd033895");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants