diff --git a/vendor/go.etcd.io/bbolt/bolt_openbsd.go b/vendor/go.etcd.io/bbolt/bolt_openbsd.go
new file mode 100644
index 0000000..bf47aa1
--- /dev/null
+++ b/vendor/go.etcd.io/bbolt/bolt_openbsd.go
@@ -0,0 +1,16 @@
+package bbolt
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+func msync(db *DB) error {
+	return unix.Msync(db.data[:db.datasz], unix.MS_INVALIDATE)
+}
+
+func fdatasync(db *DB) error {
+	if db.data != nil {
+		return msync(db)
+	}
+	return db.file.Sync()
+}