diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index e3b39505e..b367fc2ef 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000001bf93ca4ea7f6c927fea9e66d9b11a6b4a123eb2412c1c7
-000000000000000000000000000000000000000001584732c476da160d7c7959
+00000000000000000ce88fc2cd2948b489dd000b7c1e864d9accc0d4efeda78b
+00000000000000000000000000000000000000000158c0517794ac3ff1cff6cf
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index cfd3191ea..fd3442e45 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000009023061926daf1e85c3cda9e422459a1a72b8be3a1effbeaae0e0aa
-00000000000000000000000000000000000000000000006e8614fbf53a0b384d
+00000000000216cf8cdae3e6b487b864cb0b3c84b4f7a94ce40375da27fb2c24
+00000000000000000000000000000000000000000000006e8697b90b4cef41ef
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 1d3c934d1..49f27da76 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("000000000000000001bf93ca4ea7f6c927fea9e66d9b11a6b4a123eb2412c1c7");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001584732c476da160d7c7959");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000ce88fc2cd2948b489dd000b7c1e864d9accc0d4efeda78b");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000158c0517794ac3ff1cff6cf");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000009023061926daf1e85c3cda9e422459a1a72b8be3a1effbeaae0e0aa");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8614fbf53a0b384d");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000216cf8cdae3e6b487b864cb0b3c84b4f7a94ce40375da27fb2c24");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8697b90b4cef41ef");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants