diff --git a/csst_ms_sls2d.md b/csst_ms_sls2d.md
index 96f33cbef51b1dce944816d432769feb9842c3f4..21f04ee48b739ba1f70c34a329a781d1e0df6062 100644
--- a/csst_ms_sls2d.md
+++ b/csst_ms_sls2d.md
@@ -72,5 +72,5 @@
 | keyword    | value                | comment                      | fallback_value | type | module               |
 | ---------- | :------------------- | ---------------------------- | -------------- | ---- | -------------------- |
 | QC1_S 　　　| 0                    | 0 for success, 1 for failure | 1              | i8   | csst_ms_sls_qc1      |
-
+| VER_QC1    | '0.0.1'              | QC1 pipeline version         |                | str  | csst_ms_sls_qc1      |