diff --git a/src/app/[locale]/admin/clubs/[club_id]/tabs/ClubCourtsTab.tsx b/src/app/[locale]/admin/clubs/[club_id]/tabs/ClubCourtsTab.tsx
index 05726ed..d37e9f6 100644
--- a/src/app/[locale]/admin/clubs/[club_id]/tabs/ClubCourtsTab.tsx
+++ b/src/app/[locale]/admin/clubs/[club_id]/tabs/ClubCourtsTab.tsx
@@ -1,6 +1,6 @@
 'use client';
 
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import { Loader2, AlertCircle, Plus, Edit, Trash2, AlertTriangle, X } from 'lucide-react';
 import {
   createCourt,
diff --git a/src/lib/api/admin-clubs.ts b/src/lib/api/admin-clubs.ts
index 238a4c7..39340a9 100644
--- a/src/lib/api/admin-clubs.ts
+++ b/src/lib/api/admin-clubs.ts
@@ -168,9 +168,24 @@ export const MOCK_CLUB_DETAIL: AdminClubDetail = {
     timezone: 'Europe/Zurich',
   },
   courts: [
-    { court_id: 1, name: 'Court 1' },
-    { court_id: 2, name: 'Court 2' },
-    { court_id: 3, name: 'Court 3' },
+    {
+      court_id: 1,
+      name: 'Court 1',
+      created_at: '2024-01-01T00:00:00Z',
+      updated_at: '2024-01-01T00:00:00Z',
+    },
+    {
+      court_id: 2,
+      name: 'Court 2',
+      created_at: '2024-01-01T00:00:00Z',
+      updated_at: '2024-01-01T00:00:00Z',
+    },
+    {
+      court_id: 3,
+      name: 'Court 3',
+      created_at: '2024-01-01T00:00:00Z',
+      updated_at: '2024-01-01T00:00:00Z',
+    },
   ],
   slot_definitions: [],
   upcoming_slots: [],
diff --git a/src/types/courts.ts b/src/types/courts.ts
index ae7c9e9..fde6507 100644
--- a/src/types/courts.ts
+++ b/src/types/courts.ts
@@ -96,7 +96,8 @@ export interface CourtError {
   errors?: ValidationError[];
   dependencies?: {
     slot_definitions: number;
-    upcoming_bookings: number;
+    slot_instances_future: number;
+    slot_instances_booked: number;
   };
 }