diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 0918d7d97..40f84d719 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000c2304b6916bd10d20f81b28def6176bdb2d4c69c9f79223
-0000000000000000000000000000000000000000015bdda8431ec59abec5ee79
+000000000000000012e1e03623602d4f9ffd59701bf05ffd11a6adeb6aa4b03f
+0000000000000000000000000000000000000000015c0ae8f48e7ef52e5b82ec
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index cd0fd8fa5..483b53214 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000050b912f384906f150608f099f7f2dba858c5e5eeeaf6edc081c0e35
-00000000000000000000000000000000000000000000006e8fdf5942b5f7488a
+0000000007afd82c6d2331e9b766b12575cd21f86630c7017a6341797fa987dc
+00000000000000000000000000000000000000000000006e900e38125c08d0ef
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 36e4ea131..cf143314e 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("00000000000000000c2304b6916bd10d20f81b28def6176bdb2d4c69c9f79223");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015bdda8431ec59abec5ee79");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000012e1e03623602d4f9ffd59701bf05ffd11a6adeb6aa4b03f");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015c0ae8f48e7ef52e5b82ec");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000050b912f384906f150608f099f7f2dba858c5e5eeeaf6edc081c0e35");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8fdf5942b5f7488a");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000007afd82c6d2331e9b766b12575cd21f86630c7017a6341797fa987dc");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e900e38125c08d0ef");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants