diff --git a/supabase/migrations/20260424000000_add_scheduled_publish_columns.sql b/supabase/migrations/20260424000000_add_scheduled_publish_columns.sql
new file mode 100644
--- /dev/null
+++ b/supabase/migrations/20260424000000_add_scheduled_publish_columns.sql
@@ -0,0 +1,10 @@
+-- Scheduled posts: store the scheduled publish time + a snapshot of share state
+-- captured at scheduling, so the Inngest job can publish without the user's session.
+
+alter table "public"."leaflets_in_publications"
+  add column "scheduled_publish_at" timestamptz,
+  add column "scheduled_publish_data" jsonb;
+
+alter table "public"."leaflets_to_documents"
+  add column "scheduled_publish_at" timestamptz,
+  add column "scheduled_publish_data" jsonb;