From a1a92d793389ffb641029f44058dbc43d6e89ef9 Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <antoine@python.org>
Date: Fri, 16 Sep 2022 10:22:54 +0200
Subject: [PATCH] Fix header in Cython declaration

---
 python/pyarrow/includes/libarrow_flight.pxd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/pyarrow/includes/libarrow_flight.pxd b/python/pyarrow/includes/libarrow_flight.pxd
index d095217253849..6377459404c3e 100644
--- a/python/pyarrow/includes/libarrow_flight.pxd
+++ b/python/pyarrow/includes/libarrow_flight.pxd
@@ -577,7 +577,7 @@ cdef extern from "arrow/python/flight.h" namespace "arrow::py::flight" nogil:
         unique_ptr[CSchemaResult]* out)
 
 
-cdef extern from "<optional>" namespace "std" nogil:
+cdef extern from "<variant>" namespace "std" nogil:
     cdef cppclass CIntStringVariant" std::variant<int, std::string>":
         CIntStringVariant()
         CIntStringVariant(int)