diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 89dd8b138..895802ca4 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000029d5ebc94f6c0ce36f5508f4c4672378083b9ee9831b3232
-00000000000000000000000000000000000000000153b06abacefdf58c0187a5
-209
+00000000000000002bd805080730f329e6b3a392dff582366cf87e18a1dfa0e0
+00000000000000000000000000000000000000000153b7ebcbf7f34bb23bad8b
+210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 76d8e6f79..39ec8e396 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000005bdaca2ead3f072ee30ddd42845a6c06a9da348e18f906efafca7
-00000000000000000000000000000000000000000000006e7e4f3234088618e6
+0000000000064ce8f746fdbbb5dc8ffffb72eba4b314b15d2ee32577bacc12fe
+00000000000000000000000000000000000000000000006e7e7f07e2bd6f9235
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 6eae50d55..b08f7e743 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("000000000000000029d5ebc94f6c0ce36f5508f4c4672378083b9ee9831b3232");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153b06abacefdf58c0187a5");
-    const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 209;
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000002bd805080730f329e6b3a392dff582366cf87e18a1dfa0e0");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153b7ebcbf7f34bb23bad8b");
+    const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000005bdaca2ead3f072ee30ddd42845a6c06a9da348e18f906efafca7");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7e4f3234088618e6");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000064ce8f746fdbbb5dc8ffffb72eba4b314b15d2ee32577bacc12fe");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7e7f07e2bd6f9235");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants