diff --git a/migrations/2024_09_21_055200_add_pos_column_to_comments.sql b/migrations/2024_09_21_055200_add_pos_column_to_comments.sql
new file mode 100644
index 0000000..507166a
--- /dev/null
+++ b/migrations/2024_09_21_055200_add_pos_column_to_comments.sql
@@ -0,0 +1 @@
+ALTER TABLE `comments` ADD `vpos_ms` INT NULL COMMENT 'コメントの再生位置' AFTER `nico_count`;