diff --git a/1787543922_table_series_add_deadline.up.sql b/1787543922_table_series_add_deadline.up.sql
new file mode 100644
index 0000000..e8169e9
--- /dev/null
+++ b/1787543922_table_series_add_deadline.up.sql
@@ -0,0 +1,2 @@
+ALTER TABLE `course_series`
+ADD COLUMN `deadline` TIMESTAMP DEFAULT NULL COMMENT "报名截止时间" after `is_active`
\ No newline at end of file