diff --git a/clientv3/kv.go b/clientv3/kv.go
index 6d9a9aedd..6a1b55d83 100644
--- a/clientv3/kv.go
+++ b/clientv3/kv.go
@@ -138,7 +138,7 @@ func (kv *kv) Do(ctx context.Context, op Op) (OpResponse, error) {
 		// TODO: handle other ops
 		case tRange:
 			var resp *pb.RangeResponse
-			r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev}
+			r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev, Serializable: op.serializable}
 			if op.sort != nil {
 				r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
 				r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
diff --git a/clientv3/op.go b/clientv3/op.go
index 0af89dfc2..7caba60d7 100644
--- a/clientv3/op.go
+++ b/clientv3/op.go
@@ -56,7 +56,7 @@ type Op struct {
 func (op Op) toRequestUnion() *pb.RequestUnion {
 	switch op.t {
 	case tRange:
-		r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev}
+		r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev, Serializable: op.serializable}
 		if op.sort != nil {
 			r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
 			r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)