1 files changed, 5 insertions, 0 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 89ca99bc90..39d68af372 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2277,6 +2277,11 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
         flags |= SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY;
     }
 
+    // Start enforcing CHECKSEQUENCEVERIFY using versionbits logic.
+    if (VersionBitsState(pindex->pprev, chainparams.GetConsensus(), Consensus::DEPLOYMENT_CSV, versionbitscache) == THRESHOLD_ACTIVE) {
+        flags |= SCRIPT_VERIFY_CHECKSEQUENCEVERIFY;
+    }
+
     int64_t nTime2 = GetTimeMicros(); nTimeForks += nTime2 - nTime1;
     LogPrint("bench", "    - Fork checks: %.2fms [%.2fs]\n", 0.001 * (nTime2 - nTime1), nTimeForks * 0.000001);