diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000000..d03c6f9bf1
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,48 @@
+# Changelog
+
+## v0.2.0
+
+This is a hardfork release for the opBNB Testnet called Fermat.
+It will be activated at block height 12113000, expected to occur on November 3, 2023, at 6 AM UTC.
+
+### User Facing Changes
+
+- Two new precompiled contracts have been introduced: blsSignatureVerify and cometBFTLightBlockValidate. The purpose of blsSignatureVerify is to verify BLS signatures in smart contracts, while cometBFTLightBlockValidate is designed to validate cometBFT light blocks. Although these contracts were primarily introduced to facilitate cross-chain communication between opBNB and Greenfield, they can also be utilized for other purposes. For instance, blsSignatureVerify can be employed to verify BLS signatures in smart contracts, and cometBFTLightBlockValidate can facilitate cross-chain communication with other blockchains based on the cosmos framework.(#7)
+- Enable the layer 2 sync mechanism for opBNB by using the flag `--syncmode=snap` or `--syncmode=full` to choose the sync mode. Make sure to enable the `l2.engine-sync=true` flag on the op-node. (#8)
+
+### Partial Changelog
+
+- #7: feat: add precompiled contracts for Greenfield link
+- #8: feat: support snap sync for OP chains
+- #11: fix: pass a SnapshotOption func when init a new pruner
+- #24: snap: fix snap-tests to handle legacy code lookups 
+- #25: sec: update version of cometbft 
+
+### Docker Images
+
+- ghcr.io/bnb-chain/op-geth:v0.2.0
+
+### Full Changelog
+
+https://github.com/bnb-chain/op-geth/compare/v0.1.3...v0.2.0
+
+## v0.1.3
+
+This release adds the preDeployedContract hardfork, which changes the name and symbol of the preDeployed contract WBNB(0x4200000000000000000000000000000000000006). It also removes the preDeployed contract GovernanceToken(0x4200000000000000000000000000000000000042).
+
+### Changelog
+
+- ci: add docker release workflow to build and release docker image #3
+- feat: add preDeployedContract hardfork #5 
+
+## v0.1.2
+
+This is the initial release for opBNB Testnet.
+
+The repo base is [optimism op-geth](https://github.com/ethereum-optimism/op-geth).
+
+### Changelog
+
+1. [perf: concurrency and memory improvements for execution layer](https://github.com/bnb-chain/op-geth/commit/f80e72bcd2b00f738326e37c96ae150dbc9fa4d4)
+2. [perf: op-node related api improvement](https://github.com/bnb-chain/op-geth/commit/0d9dc40a39242130e71621e081640935afc23a0a)
+3. [feat: reannounce local pending transactions](https://github.com/bnb-chain/op-geth/pull/2)
diff --git a/params/config.go b/params/config.go
index af27a08327..6376f02725 100644
--- a/params/config.go
+++ b/params/config.go
@@ -293,8 +293,7 @@ var (
 			EIP1559Denominator: 8,
 		},
 		PreContractForkBlock: big.NewInt(5805494),
-		// TODO change block number
-		Fermat: nil,
+		Fermat:               big.NewInt(12113000), // Nov-03-2023 06 AM +UTC
 	}
 
 	OPBNBDevNetConfig = &ChainConfig{