diff --git a/common/domain/chainid.go b/common/domain/chainid.go
index cd742224..7f32e0ff 100644
--- a/common/domain/chainid.go
+++ b/common/domain/chainid.go
@@ -179,6 +179,7 @@ func NormalizeTxHashByChainId(chainID sdk.ChainID, txHash string) string {
 		sdk.ChainIDBase,
 		sdk.ChainIDBSC,
 		sdk.ChainIDPolygon,
+		sdk.ChainIDPolygonSepolia,
 		sdk.ChainIDAvalanche,
 		sdk.ChainIDOasis,
 		sdk.ChainIDAurora,
diff --git a/tx-tracker/chains/chains.go b/tx-tracker/chains/chains.go
index 77aedde0..19600666 100644
--- a/tx-tracker/chains/chains.go
+++ b/tx-tracker/chains/chains.go
@@ -83,7 +83,8 @@ func FetchTx(
 		sdk.ChainIDOptimismSepolia,
 		sdk.ChainIDPolygon,
 		sdk.ChainIDScroll,
-		sdk.ChainIDBlast:
+		sdk.ChainIDBlast,
+		sdk.ChainIDPolygonSepolia: // polygon amoy
 		apiEvm := &apiEvm{
 			chainId: chainId,
 		}
diff --git a/tx-tracker/chains/util.go b/tx-tracker/chains/util.go
index e21305b4..e7f55f5a 100644
--- a/tx-tracker/chains/util.go
+++ b/tx-tracker/chains/util.go
@@ -134,7 +134,8 @@ func FormatTxHashByChain(chainId sdk.ChainID, txHash string) string {
 		sdk.ChainIDOptimismSepolia,
 		sdk.ChainIDPolygon,
 		sdk.ChainIDScroll,
-		sdk.ChainIDBlast:
+		sdk.ChainIDBlast,
+		sdk.ChainIDPolygonSepolia:
 		return txHashLowerCaseWith0x(txHash)
 	case sdk.ChainIDSei, sdk.ChainIDWormchain:
 		return txHashLowerCaseWith0x(txHash)
diff --git a/tx-tracker/config/structs.go b/tx-tracker/config/structs.go
index a9f5d1f2..fc5515d1 100644
--- a/tx-tracker/config/structs.go
+++ b/tx-tracker/config/structs.go
@@ -207,6 +207,10 @@ type TestnetRpcProviderSettings struct {
 	OptimismSepoliaRequestsPerMinute         uint16 `split_words:"true" required:"false"`
 	OptimismSepoliaFallbackUrls              string `split_words:"true" required:"false"`
 	OptimismSepoliaFallbackRequestsPerMinute string `split_words:"true" required:"false"`
+	PolygonSepoliaBaseUrl                    string `split_words:"true" required:"false"`
+	PolygonSepoliaRequestsPerMinute          uint16 `split_words:"true" required:"false"`
+	PolygonSepoliaFallbackUrls               string `split_words:"true" required:"false"`
+	PolygonSepoliaFallbackRequestsPerMinute  string `split_words:"true" required:"false"`
 }
 
 func NewRpcProviderSettingJson(path string) (*RpcProviderSettingsJson, error) {
@@ -731,6 +735,19 @@ func (r TestnetRpcProviderSettings) ToMap() (map[sdk.ChainID][]RpcConfig, error)
 		return nil, err
 	}
 	rpcs[sdk.ChainIDOptimismSepolia] = optimismSepoliaRpcConfigs
+
+	// add polygon sepolia rpcs
+	polygonSepoliaRpcConfigs, err := addRpcConfig(
+		r.PolygonSepoliaBaseUrl,
+		r.PolygonSepoliaRequestsPerMinute,
+		r.PolygonSepoliaFallbackUrls,
+		r.PolygonSepoliaFallbackRequestsPerMinute)
+	if err != nil {
+		return nil, err
+	}
+	// polygon sepolia is the same as polygon amoy
+	rpcs[sdk.ChainIDPolygonSepolia] = polygonSepoliaRpcConfigs
+
 	return rpcs, nil
 }