diff --git a/params/config_mordor.go b/params/config_mordor.go
index 59de8ed1f6..c3fdb0a5ce 100644
--- a/params/config_mordor.go
+++ b/params/config_mordor.go
@@ -88,12 +88,14 @@ var (
 		// EIP4895FBlock: nil, // Beacon chain push withdrawals as operations
 		EIP6049FBlock: big.NewInt(9_957_000), // Deprecate SELFDESTRUCT (noop)
 
-		DisposalBlock:      big.NewInt(0),
-		ECIP1017FBlock:     big.NewInt(0),
-		ECIP1017EraRounds:  big.NewInt(2000000),
-		ECIP1010PauseBlock: nil,
-		ECIP1010Length:     nil,
-		ECBP1100FBlock:     big.NewInt(2380000), // ETA 29 Sept 2020, ~1500 UTC
+		DisposalBlock:            big.NewInt(0),
+		ECIP1017FBlock:           big.NewInt(0),
+		ECIP1017EraRounds:        big.NewInt(2000000),
+		ECIP1010PauseBlock:       nil,
+		ECIP1010Length:           nil,
+		ECBP1100FBlock:           big.NewInt(2380000),    // ETA 29 Sept 2020, ~1500 UTC
+		ECBP1100DeactivateFBlock: big.NewInt(10_400_000), // ETA 13 January 2024
+
 		RequireBlockHashes: map[uint64]common.Hash{
 			840013: common.HexToHash("0x2ceada2b191879b71a5bcf2241dd9bc50d6d953f1640e62f9c2cee941dc61c9d"),
 			840014: common.HexToHash("0x8ec29dd692c8985b82410817bac232fc82805b746538d17bc924624fe74a0fcf"),