diff --git a/test/config/signer.config.toml b/test/config/signer.config.toml
index 304f06c33b..95118ee957 100644
--- a/test/config/signer.config.toml
+++ b/test/config/signer.config.toml
@@ -1,7 +1,7 @@
 Port = 7001
 
 [L1]
-ChainId = 11155111
+ChainId = 1337
 RPC = "http://xlayer-mock-l1-network:8545"
 PolygonZkEVMAddress = "0xeb173087729c88a47568AF87b17C653039377BA6"
 GlobalExitRootManagerAddr = "0xEd236da21Ff62bC7B62608AdB818da49E8549fa7"
diff --git a/test/config/test.genesis.config.json b/test/config/test.genesis.config.json
index aa12ecd4ee..ea37584ca1 100644
--- a/test/config/test.genesis.config.json
+++ b/test/config/test.genesis.config.json
@@ -1,6 +1,6 @@
 {
 	"l1Config": {
-		"chainId": 11155111,
+		"chainId": 1337,
 		"polygonZkEVMAddress": "0xeb173087729c88a47568AF87b17C653039377BA6",
 		"polygonRollupManagerAddress": "0x2d42E2899662EFf08b13eeb65b154b904C7a1c8a",
 		"polTokenAddress": "0xe223519d64C0A49e7C08303c2220251be6b70e1d",
diff --git a/test/config/test.node.config.toml b/test/config/test.node.config.toml
index b1ae2cbcc0..29863d77b0 100644
--- a/test/config/test.node.config.toml
+++ b/test/config/test.node.config.toml
@@ -130,7 +130,7 @@ StateConsistencyCheckInterval = "5s"
 		Port = 6900
 		Filename = "/datastreamer/datastream.bin"
 		Version = 1
-		ChainID = 11155111
+		ChainID = 1337
 		Enabled = false
 
 [SequenceSender]