diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -258,7 +258,7 @@
         consensus.BIP65Height = 581885;
         // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
         consensus.BIP66Height = 330776;
-        consensus.antiReplayOpReturnSunsetHeight = 530000;
+        consensus.antiReplayOpReturnSunsetHeight = 1250000;
         consensus.antiReplayOpReturnCommitment = GetAntiReplayCommitment();
         consensus.powLimit = uint256S(
             "00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");