diff --git a/common/version/version.go b/common/version/version.go
index 8af04b2b3..170334002 100644
--- a/common/version/version.go
+++ b/common/version/version.go
@@ -5,7 +5,7 @@ import (
 	"runtime/debug"
 )
 
-var tag = "v4.7.12"
+var tag = "v4.7.13"
 
 var commit = func() string {
 	if info, ok := debug.ReadBuildInfo(); ok {
diff --git a/rollup/internal/controller/sender/estimategas.go b/rollup/internal/controller/sender/estimategas.go
index d9c7ed802..fce9866b0 100644
--- a/rollup/internal/controller/sender/estimategas.go
+++ b/rollup/internal/controller/sender/estimategas.go
@@ -168,8 +168,15 @@ func finetuneAccessList(accessList *types.AccessList, gasLimitWithAccessList uin
 			// Each storage key saves 100 gas units.
 			gasLimitWithAccessList += uint64(100 * len(entry.StorageKeys))
 		} else {
-			// Otherwise, keep the entry in the new access list.
-			newAccessList = append(newAccessList, entry)
+			// Ensure StorageKeys is never nil to avoid "missing required field 'storageKeys'" error during JSON serialization.
+			storageKeys := entry.StorageKeys
+			if storageKeys == nil {
+				storageKeys = []common.Hash{}
+			}
+			newAccessList = append(newAccessList, types.AccessTuple{
+				Address:     entry.Address,
+				StorageKeys: storageKeys,
+			})
 		}
 	}
 	return &newAccessList, gasLimitWithAccessList