diff --git a/eth/catalyst/simulated_beacon_api.go b/eth/catalyst/simulated_beacon_api.go
index 14b7a4718c..092bdbeed3 100644
--- a/eth/catalyst/simulated_beacon_api.go
+++ b/eth/catalyst/simulated_beacon_api.go
@@ -18,6 +18,7 @@ package catalyst
 
 import (
 	"context"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"