diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index f4780b105..d8623adb1 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000001460058916a5b308d1299ff7cfd36eb3400982243537ac14
-000000000000000000000000000000000000000001539979e359146272dd4ccc
+00000000000000000cdb64664b4442c184f9416adb0e0850948786bf2ee6283b
+00000000000000000000000000000000000000000153a156596a4a60132ad855
 209
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 7f814eb7c..120b2e5c2 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000018f4d4d63fe79dce9909fb537c73f780a8a7e6537732d6a8af14ddc
-00000000000000000000000000000000000000000000006e7dc044807e0832e7
+000000000109b0a56e8e61ba9da9e1e2b5cced845992db3e2535780ca3de16c2
+00000000000000000000000000000000000000000000006e7df350ec9a5844bf
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 90220e3b1..0a2a19b76 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("00000000000000001460058916a5b308d1299ff7cfd36eb3400982243537ac14");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001539979e359146272dd4ccc");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000cdb64664b4442c184f9416adb0e0850948786bf2ee6283b");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153a156596a4a60132ad855");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 209;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000018f4d4d63fe79dce9909fb537c73f780a8a7e6537732d6a8af14ddc");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7dc044807e0832e7");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000109b0a56e8e61ba9da9e1e2b5cced845992db3e2535780ca3de16c2");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7df350ec9a5844bf");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants