diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 585df220c..905236cd4 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000634512b98c5ba38c09449b4a64e0329a6f162789a011e8ff
-000000000000000000000000000000000000000001541062c835dcb870e717ad
+00000000000000001732ba1e2eb2ff32dce69cdbbbf73cb5cce2cc37eb521bbf
+000000000000000000000000000000000000000001541c74e156e989e268d9d0
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 71efaf94a..75d46ff3d 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000017cb348ab12c3f75897386fc65b02c8e9dba2ed3263eccb8184c8
-00000000000000000000000000000000000000000000006e80d2209957ac4e1b
+000000000646c244f19972fe20f7960c5b534b7a6acfbdb4f7485970540c6c6f
+00000000000000000000000000000000000000000000006e80d220c757da4e49
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 72cf6f6a8..8cc14a725 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("0000000000000000634512b98c5ba38c09449b4a64e0329a6f162789a011e8ff");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001541062c835dcb870e717ad");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001732ba1e2eb2ff32dce69cdbbbf73cb5cce2cc37eb521bbf");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001541c74e156e989e268d9d0");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000017cb348ab12c3f75897386fc65b02c8e9dba2ed3263eccb8184c8");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80d2209957ac4e1b");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000646c244f19972fe20f7960c5b534b7a6acfbdb4f7485970540c6c6f");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e80d220c757da4e49");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants