diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 9819df81c..5d354c083 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000533572b54a1f68cbb4bdfefcf3df04d7d48aae9c5e7f610c
-00000000000000000000000000000000000000000153cb1975946b757ed20e11
+000000000000000086f5ea3761b231a98755c201af006528b1aab97d1a2feb67
+00000000000000000000000000000000000000000153d03f877c448f74924a6c
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 5457f3e00..9e4fb33db 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000045ffec4470076313a5db57f27013e19dae71f430d04abc3de540022
-00000000000000000000000000000000000000000000006e7f1587b3eb9170ce
+0000000005da3d23ab3558a3e5b7dac0f2e26d355fcd9093df5ca2df8b222354
+00000000000000000000000000000000000000000000006e7f452f70299a5f93
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index a684e35a3..e7811eb72 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("0000000000000000533572b54a1f68cbb4bdfefcf3df04d7d48aae9c5e7f610c");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153cb1975946b757ed20e11");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000086f5ea3761b231a98755c201af006528b1aab97d1a2feb67");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153d03f877c448f74924a6c");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000045ffec4470076313a5db57f27013e19dae71f430d04abc3de540022");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f1587b3eb9170ce");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000005da3d23ab3558a3e5b7dac0f2e26d355fcd9093df5ca2df8b222354");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f452f70299a5f93");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants