diff --git a/common/utils.h b/common/utils.h
index 874d0af..201e47e 100644
--- a/common/utils.h
+++ b/common/utils.h
@@ -411,8 +411,8 @@
 // integer.
 // Return kPayloadTimestampError if both are integers but |new_version| <
 // |old_version|.
-ErrorCode IsTimestampNewer(const std::string& old_version,
-                           const std::string& new_version);
+ErrorCode IsTimestampNewer(const std::string_view old_version,
+                           const std::string_view new_version);
 
 std::unique_ptr<android::base::MappedFile> GetReadonlyZeroBlock(size_t size);