diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 26e078b34..507ff7498 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000027a3d23198d484d3d3611a7e0a539b41a2aa1e9315661bea
-0000000000000000000000000000000000000000015460646ce6eae573aa5d9f
+00000000000000002b80b3e8e631e76552a35268c1330b8d56e5066433b07214
+000000000000000000000000000000000000000001546fc63e931603d6444f60
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index f41aaef92..c61a3ca56 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-000000000012fb53e6d00f3115e7aac5438fd9411f946da96105253e875a22f4
-00000000000000000000000000000000000000000000006e815cd052f7b7cca3
+000000000002530aa3262aaedbe153ffebde1c4b8f9c7b28b738513811382d91
+00000000000000000000000000000000000000000000006e818d4175096895dd
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 7cc400f65..6c058c36d 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("000000000000000027a3d23198d484d3d3611a7e0a539b41a2aa1e9315661bea");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015460646ce6eae573aa5d9f");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000002b80b3e8e631e76552a35268c1330b8d56e5066433b07214");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001546fc63e931603d6444f60");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000012fb53e6d00f3115e7aac5438fd9411f946da96105253e875a22f4");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e815cd052f7b7cca3");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000002530aa3262aaedbe153ffebde1c4b8f9c7b28b738513811382d91");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e818d4175096895dd");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants