diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index ea7b18c2a..2a45f338e 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000001948df3ece247829dcfd15bbdf1f458d826a56aaecc9fb05
-00000000000000000000000000000000000000000153be406f847580a9f89c3c
+000000000000000080b8f2a333249d77205abe83adc8cfc9e48b8c5ae49e398a
+00000000000000000000000000000000000000000153c47e7786eb6cc5c4b231
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 37457c380..d41bb2322 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000000fbb917e12f7ce3d0b47d90c5c9d018e5d080f6e01c8963d888a0
-00000000000000000000000000000000000000000000006e7eb16752d57ff110
+00000000018943952b38797d3bf4cc4b27397a75c83bd1ea11dd8a6086c76644
+00000000000000000000000000000000000000000000006e7ee4433c74fbc188
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index afc9e6330..b99c70a75 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("00000000000000001948df3ece247829dcfd15bbdf1f458d826a56aaecc9fb05");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153be406f847580a9f89c3c");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000080b8f2a333249d77205abe83adc8cfc9e48b8c5ae49e398a");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153c47e7786eb6cc5c4b231");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000fbb917e12f7ce3d0b47d90c5c9d018e5d080f6e01c8963d888a0");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7eb16752d57ff110");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000018943952b38797d3bf4cc4b27397a75c83bd1ea11dd8a6086c76644");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7ee4433c74fbc188");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants