From 5c5f381af346b2dd6794edc0983fea6bbd5d5733 Mon Sep 17 00:00:00 2001
From: CEL Dev Team <cel-dev@google.com>
Date: Sat, 10 Oct 2026 05:00:52 -0700
Subject: [PATCH] No public description

PiperOrigin-RevId: 997060290
---
 common/internal/byte_string.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/internal/byte_string.cc b/common/internal/byte_string.cc
index cbf28f422..dcc8479ca 100644
--- a/common/internal/byte_string.cc
+++ b/common/internal/byte_string.cc
@@ -133,7 +133,7 @@ absl::optional<absl::string_view> ByteString::TryFlat() const {
       if (auto flat = rep_.large.data->TryFlat(); flat.has_value()) {
         return flat->substr(rep_.large.offset, rep_.large.size);
       }
-      return absl::nullopt;
+      return std::nullopt;
     }
   }
 }