diff --git a/CHANGELOG.md b/CHANGELOG.md
index d109bdfd33..16cc74e3a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 ## v0.2.0
 
 This is a hardfork release for the opBNB Testnet called Fermat.
-It will be activated at block height 13063000, expected to occur on November 14, 2023, at 6 AM UTC.
+It will be activated at block height 12113000, expected to occur on November 3, 2023, at 6 AM UTC.
 
 ### User Facing Changes
 
diff --git a/op-node/chaincfg/chains.go b/op-node/chaincfg/chains.go
index 1de75931d7..80345c8012 100644
--- a/op-node/chaincfg/chains.go
+++ b/op-node/chaincfg/chains.go
@@ -130,7 +130,7 @@ var OPBNBTestnet = rollup.Config{
 	DepositContractAddress: common.HexToAddress("0x4386c8abf2009ac0c263462da568dd9d46e52a31"),
 	L1SystemConfigAddress:  common.HexToAddress("0x406ac857817708eaf4ca3a82317ef4ae3d1ea23b"),
 	RegolithTime:           u64Ptr(0),
-	Fermat:                 big.NewInt(13063000), // Nov-14-2023 06 AM +UTC
+	Fermat:                 big.NewInt(12113000), // Nov-03-2023 06 AM +UTC
 }
 
 var OPBNBDevnet = rollup.Config{