diff --git a/core/chains/evm/config/toml/defaults/Astar_Mainnet.toml b/core/chains/evm/config/toml/defaults/Astar_Mainnet.toml
index 87808001eb..d1697d137a 100644
--- a/core/chains/evm/config/toml/defaults/Astar_Mainnet.toml
+++ b/core/chains/evm/config/toml/defaults/Astar_Mainnet.toml
@@ -1,4 +1,5 @@
 ChainID = '592'
+ChainType = 'astar'
 FinalityTagEnabled = true
 FinalityDepth = 100
 LogPollInterval = '6s'
diff --git a/docs/CONFIG.md b/docs/CONFIG.md
index 1bf7837953..10e2519049 100644
--- a/docs/CONFIG.md
+++ b/docs/CONFIG.md
@@ -4229,6 +4229,7 @@ GasLimit = 5400000
 AutoCreateKey = true
 BlockBackfillDepth = 10
 BlockBackfillSkip = false
+ChainType = 'astar'
 FinalityDepth = 100
 FinalityTagEnabled = true
 LogBackfillBatchSize = 1000