From f96989905e18682ebcd510157c6225f72abf38bc Mon Sep 17 00:00:00 2001
From: willtyler <will.tyler11@gmail.com>
Date: Wed, 6 Nov 2024 18:23:53 +0000
Subject: [PATCH] Fix ruff error

---
 vcztools/vcf_writer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vcztools/vcf_writer.py b/vcztools/vcf_writer.py
index 47b82b0..0240939 100644
--- a/vcztools/vcf_writer.py
+++ b/vcztools/vcf_writer.py
@@ -307,7 +307,7 @@ def c_chunk_to_vcf(
     *,
     drop_genotypes,
     no_update,
-    preceding_future: Optional[concurrent.futures.Future] = None,
+    preceding_future: concurrent.futures.Future | None = None,
 ):
     chrom = contigs[get_vchunk_array(root.variant_contig, v_chunk, v_mask_chunk)]
     # TODO check we don't truncate silently by doing this