diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 7f254805a..0d8e4d0b7 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000cd09aa87367046e170af46e387d143b3ec7b76a981a758a
-0000000000000000000000000000000000000000016a708cf81fedf815733107
+000000000000000013ccec608cc3120d11700e2be11c44a8cc1b3fd5ea414966
+0000000000000000000000000000000000000000016a8ae15e99a5c1e4893205
 211
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index a0636649f..9b59375f7 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000138bf21f4b5616efe2453690fc70a61c888fe3c5502b37b0c0f57
-00000000000000000000000000000000000000000000006e9fb725862d2a14d3
+00000000000022e66090014a6f6c17143f1910e63cfc0397277e70b364bdc4a4
+00000000000000000000000000000000000000000000006eab58f2bd4afc35a2
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index c9e44771c..eaba923db 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("00000000000000000cd09aa87367046e170af46e387d143b3ec7b76a981a758a");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016a708cf81fedf815733107");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000013ccec608cc3120d11700e2be11c44a8cc1b3fd5ea414966");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016a8ae15e99a5c1e4893205");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000138bf21f4b5616efe2453690fc70a61c888fe3c5502b37b0c0f57");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9fb725862d2a14d3");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000022e66090014a6f6c17143f1910e63cfc0397277e70b364bdc4a4");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006eab58f2bd4afc35a2");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants