diff --git a/db/versions/11386-turquoiseTulip/00-firstScript.sql b/db/versions/11386-turquoiseTulip/00-firstScript.sql
new file mode 100644
index 000000000..0dc1c8e82
--- /dev/null
+++ b/db/versions/11386-turquoiseTulip/00-firstScript.sql
@@ -0,0 +1 @@
+ALTER TABLE vn.sim MODIFY COLUMN pin char(4) NOT NULL CHECK (`pin` REGEXP '^[0-9]+$');