diff --git a/server/migrations/20260417100100_alter_articles_for_kol.down.sql b/server/migrations/20260417100100_alter_articles_for_kol.down.sql
new file mode 100644
index 0000000..03b4750
--- /dev/null
+++ b/server/migrations/20260417100100_alter_articles_for_kol.down.sql
@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS idx_article_kol_prompt;
+ALTER TABLE articles DROP COLUMN IF EXISTS kol_prompt_id;
diff --git a/server/migrations/20260417100100_alter_articles_for_kol.up.sql b/server/migrations/20260417100100_alter_articles_for_kol.up.sql
new file mode 100644
index 0000000..169cd28
--- /dev/null
+++ b/server/migrations/20260417100100_alter_articles_for_kol.up.sql
@@ -0,0 +1,6 @@
+ALTER TABLE articles
+    ADD COLUMN kol_prompt_id BIGINT REFERENCES kol_prompts(id);
+
+CREATE INDEX idx_article_kol_prompt
+    ON articles(kol_prompt_id)
+    WHERE kol_prompt_id IS NOT NULL AND deleted_at IS NULL;