diff --git a/src/cron/store.ts b/src/cron/store.ts
index 45c989bc0..34c0e76b6 100644
--- a/src/cron/store.ts
+++ b/src/cron/store.ts
@@ -8,7 +8,6 @@ import type { CronStoreFile } from "./types.js";
 
 export const DEFAULT_CRON_DIR = path.join(CONFIG_DIR, "cron");
 export const DEFAULT_CRON_STORE_PATH = path.join(DEFAULT_CRON_DIR, "jobs.json");
-export const LEGACY_FLAT_CRON_STORE_PATH = path.join(CONFIG_DIR, "cron.json");
 
 export function resolveCronStorePath(storePath?: string) {
   if (storePath?.trim()) {
@@ -20,49 +19,7 @@ export function resolveCronStorePath(storePath?: string) {
   return DEFAULT_CRON_STORE_PATH;
 }
 
-async function maybeMigrateLegacyFlatStore(storePath: string) {
-  const resolved = path.resolve(storePath);
-  const resolvedDefault = path.resolve(DEFAULT_CRON_STORE_PATH);
-  if (resolved !== resolvedDefault) return;
-  if (fs.existsSync(resolved)) return;
-  if (!fs.existsSync(LEGACY_FLAT_CRON_STORE_PATH)) return;
-
-  try {
-    const raw = await fs.promises.readFile(
-      LEGACY_FLAT_CRON_STORE_PATH,
-      "utf-8",
-    );
-    const parsed = JSON5.parse(raw) as Partial<CronStoreFile> | null;
-    const jobs = Array.isArray(parsed?.jobs) ? (parsed?.jobs as never[]) : [];
-    const store: CronStoreFile = {
-      version: 1,
-      jobs: jobs.filter(Boolean) as never as CronStoreFile["jobs"],
-    };
-    await saveCronStore(storePath, store);
-
-    await fs.promises.mkdir(DEFAULT_CRON_DIR, { recursive: true });
-    const destBase = path.join(DEFAULT_CRON_DIR, "cron.json.migrated");
-    const dest = fs.existsSync(destBase)
-      ? path.join(
-          DEFAULT_CRON_DIR,
-          `cron.json.migrated.${process.pid}.${Math.random().toString(16).slice(2)}`,
-        )
-      : destBase;
-    try {
-      await fs.promises.rename(LEGACY_FLAT_CRON_STORE_PATH, dest);
-    } catch {
-      await fs.promises.copyFile(LEGACY_FLAT_CRON_STORE_PATH, dest);
-      await fs.promises.unlink(LEGACY_FLAT_CRON_STORE_PATH).catch(() => {
-        /* ignore */
-      });
-    }
-  } catch {
-    // Best-effort; keep legacy store if anything fails.
-  }
-}
-
 export async function loadCronStore(storePath: string): Promise<CronStoreFile> {
-  await maybeMigrateLegacyFlatStore(storePath);
   try {
     const raw = await fs.promises.readFile(storePath, "utf-8");
     const parsed = JSON5.parse(raw) as Partial<CronStoreFile> | null;