diff --git a/core/chains/evm/config/toml/defaults/Celo_Testnet.toml b/core/chains/evm/config/toml/defaults/Celo_Testnet.toml
index eb43f080b7d..8bee5323f4d 100644
--- a/core/chains/evm/config/toml/defaults/Celo_Testnet.toml
+++ b/core/chains/evm/config/toml/defaults/Celo_Testnet.toml
@@ -5,6 +5,7 @@ LogPollInterval = '5s'
 MinIncomingConfirmations = 1
 NoNewHeadsThreshold = '1m'
 OCR.ContractConfirmations = 1
+FinalizedBlockOffset = 2
 NoNewFinalizedHeadsThreshold = '1m'
 
 [GasEstimator]
diff --git a/core/chains/evm/config/toml/defaults/WeMix_Testnet.toml b/core/chains/evm/config/toml/defaults/WeMix_Testnet.toml
index d4f829bcfd1..451d22a1557 100644
--- a/core/chains/evm/config/toml/defaults/WeMix_Testnet.toml
+++ b/core/chains/evm/config/toml/defaults/WeMix_Testnet.toml
@@ -6,6 +6,7 @@ MinIncomingConfirmations = 1
 # WeMix emits a block every 1 second, regardless of transactions
 LogPollInterval = '3s'
 NoNewHeadsThreshold = '30s'
+FinalizedBlockOffset = 2
 NoNewFinalizedHeadsThreshold = '40s'
 
 [OCR]