diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 96106165e..27a9ea1ad 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000001f1a2e620e64c97dca1919eb5e3d6698be3a69c2c07c75cd
-0000000000000000000000000000000000000000016aeaeef1b841b931da0873
+0000000000000000207a924aa3423753cce9507d6c88258b110c0b18f5fbc983
+0000000000000000000000000000000000000000016b039a68a5af3276dd2824
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 1f96d0fcd..04aee5a40 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000098d0d0177a3d4a535892f6f00d363a7abcbc3c2a122ac872ab7d
-00000000000000000000000000000000000000000000006eac1db0e3a01515f1
+0000000006271813cd6bbb7f697f3b845e2861b933a773253cafea3defe439d1
+00000000000000000000000000000000000000000000006eac4e03803cecd498
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index f08201287..2c29eb1ff 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("00000000000000001f1a2e620e64c97dca1919eb5e3d6698be3a69c2c07c75cd");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016aeaeef1b841b931da0873");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000207a924aa3423753cce9507d6c88258b110c0b18f5fbc983");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016b039a68a5af3276dd2824");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000098d0d0177a3d4a535892f6f00d363a7abcbc3c2a122ac872ab7d");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eac1db0e3a01515f1");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000006271813cd6bbb7f697f3b845e2861b933a773253cafea3defe439d1");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eac4e03803cecd498");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants