diff --git a/src/vcf b/src/vcf
index 46093c7..9942cf7 160000
--- a/src/vcf
+++ b/src/vcf
@@ -1 +1 @@
-Subproject commit 46093c7ebb3bfad4b3e930ecef7a65f55f13e3af
+Subproject commit 9942cf77fe139f7e2442e7771c270aaa0fe8f40c