diff --git a/benchmarks/go/go.mod b/benchmarks/go/go.mod
index f9cad31..817feb8 100644
--- a/benchmarks/go/go.mod
+++ b/benchmarks/go/go.mod
@@ -1,5 +1,5 @@
 module bench
 
-go 1.26.4
+go 1.27.1
 
-require github.com/go-ruby-optparse/optparse v0.0.0-20260917100925-33b18da76c37
+require github.com/go-ruby-optparse/optparse v0.0.0-20261025191650-6ad8c75c6cfc
diff --git a/benchmarks/go/go.sum b/benchmarks/go/go.sum
index 7463e1e..348b304 100644
--- a/benchmarks/go/go.sum
+++ b/benchmarks/go/go.sum
@@ -4,3 +4,5 @@ github.com/go-ruby-optparse/optparse v0.0.0-20260717071632-da8194087eaf h1:48jiV
 github.com/go-ruby-optparse/optparse v0.0.0-20260717071632-da8194087eaf/go.mod h1:BxhqkQFCqSMeYeWOHt7sdxTSkbaSJF19dWzspICZL1Q=
 github.com/go-ruby-optparse/optparse v0.0.0-20260917100925-33b18da76c37 h1:SZ2alHm5/WzH6f8ChbnUE2JrzmBOx402mQHuk7BhadY=
 github.com/go-ruby-optparse/optparse v0.0.0-20260917100925-33b18da76c37/go.mod h1:BxhqkQFCqSMeYeWOHt7sdxTSkbaSJF19dWzspICZL1Q=
+github.com/go-ruby-optparse/optparse v0.0.0-20261025191650-6ad8c75c6cfc h1:4fAX2g1UPmk4OBFjsFGn5XdFw51o2Qa+6k9SvRvLiX8=
+github.com/go-ruby-optparse/optparse v0.0.0-20261025191650-6ad8c75c6cfc/go.mod h1:2Nr10p0Cs3Z87MHt7pZk/lkDzNygTpia4giO72BjQYM=