diff --git a/server/src/db/migrations/Migration20200101046140_tours_are_on_for_every_install.ts b/server/src/db/migrations/Migration20200101046140_tours_are_on_for_every_install.ts
new file mode 100644
index 000000000..a42eae0f2
--- /dev/null
+++ b/server/src/db/migrations/Migration20200101046140_tours_are_on_for_every_install.ts
@@ -0,0 +1,15 @@
+import { Migration } from '@mikro-orm/migrations';
+
+/**
+ * Tours is on for every install from v5 on. A fresh install gets it from the
+ * addon seeder, which now writes it enabled; an install that already has the
+ * row is switched on here, once. The migration never runs again, so an admin
+ * who turns Tours off afterwards keeps it off.
+ */
+export class Migration20200101046140_tours_are_on_for_every_install extends Migration {
+  override name = 'Migration20200101046140_tours_are_on_for_every_install';
+
+  override async up(): Promise<void> {
+    this.addSql("UPDATE addons SET enabled = 1 WHERE id = 'tours'");
+  }
+}
diff --git a/server/src/db/seeders/AddonSeeder.ts b/server/src/db/seeders/AddonSeeder.ts
index 681854429..e0acb7b66 100644
--- a/server/src/db/seeders/AddonSeeder.ts
+++ b/server/src/db/seeders/AddonSeeder.ts
@@ -13,7 +13,7 @@ interface AddonRow {
   sort_order: number;
 }
 
-const DEFAULT_ADDONS: AddonRow[] = [
+export const DEFAULT_ADDONS: AddonRow[] = [
   {
     id: 'packing',
     name: 'Lists',
@@ -101,7 +101,7 @@ const DEFAULT_ADDONS: AddonRow[] = [
     description: 'Hikes and other single-day tours that follow a route',
     type: 'trip',
     icon: 'Mountain',
-    enabled: 0,
+    enabled: 1,
     sort_order: 8,
   },
   {
diff --git a/server/tests/unit/db/legacy-baseline.test.ts b/server/tests/unit/db/legacy-baseline.test.ts
index 2f8c8d467..b6fec4c75 100644
--- a/server/tests/unit/db/legacy-baseline.test.ts
+++ b/server/tests/unit/db/legacy-baseline.test.ts
@@ -80,6 +80,7 @@ const UNNUMBERED = [
   'Migration20200101046110_a_tour_points_at_its_packing_list',
   'Migration20200101046120_a_wanderer_connection_can_watch_its_sources',
   'Migration20200101046130_snowshoeing_and_winter_hiking_are_ski_disciplines',
+  'Migration20200101046140_tours_are_on_for_every_install',
 ];
 // The last step the positional runner ever had; planLegacyBaseline refuses a
 // schema_version past it.
diff --git a/server/tests/unit/db/tours-on-by-default-migration.test.ts b/server/tests/unit/db/tours-on-by-default-migration.test.ts
new file mode 100644
index 000000000..adf92e515
--- /dev/null
+++ b/server/tests/unit/db/tours-on-by-default-migration.test.ts
@@ -0,0 +1,40 @@
+/**
+ * Tours is on for every install from v5 on: the migration switches an existing
+ * install's Tours row on once and touches no other addon, and the seeder writes
+ * Tours enabled on a fresh install.
+ */
+import { DEFAULT_ADDONS } from '../../../src/db/seeders/AddonSeeder';
+import { createMigrationOrm, migrateTo, pendingNames, rawExec, rawQuery } from '../../helpers/migration-step';
+
+import { describe, expect, it } from 'vitest';
+
+const TARGET = 'Migration20200101046140_tours_are_on_for_every_install';
+
+describe('tours on by default', () => {
+  it('ADDON-TOURS-001: an existing install has Tours switched on once, the other addons stay as they were', async () => {
+    const orm = await createMigrationOrm();
+    try {
+      const names = await pendingNames(orm);
+      const idx = names.indexOf(TARGET);
+      expect(idx).toBeGreaterThan(0);
+      await migrateTo(orm, names[idx - 1]);
+      await rawExec(
+        orm,
+        "INSERT INTO addons (id, name, type, enabled, sort_order) VALUES ('tours', 'Tours', 'trip', 0, 8), ('roadtrip', 'Road trip', 'trip', 0, 7)",
+      );
+
+      await migrateTo(orm, TARGET);
+
+      expect(await rawQuery(orm, 'SELECT id, enabled FROM addons ORDER BY id')).toEqual([
+        { id: 'roadtrip', enabled: 0 },
+        { id: 'tours', enabled: 1 },
+      ]);
+    } finally {
+      await orm.close(true);
+    }
+  });
+
+  it('ADDON-TOURS-002: the seeder writes Tours enabled for a fresh install', () => {
+    expect(DEFAULT_ADDONS.find((addon) => addon.id === 'tours')?.enabled).toBe(1);
+  });
+});