diff --git a/backend/app/Http/Middleware/AdministratorOnly.php b/backend/app/Http/Middleware/AdministratorOnly.php
new file mode 100644
index 0000000..81ae32b
--- /dev/null
+++ b/backend/app/Http/Middleware/AdministratorOnly.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class AdministratorOnly
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        if ($request->user()->role !== 'ADMIN') {
+            return response(status: 403);
+        }
+
+        return $next($request);
+    }
+}
diff --git a/backend/routes/api.php b/backend/routes/api.php
index cc3c6ab..568f883 100644
--- a/backend/routes/api.php
+++ b/backend/routes/api.php
@@ -6,6 +6,7 @@ use App\Http\Controllers\ExternalApiController;
 use App\Http\Controllers\InternshipController;
 use App\Http\Controllers\StudentDataController;
 use App\Http\Controllers\InternshipStatusDataController;
+use App\Http\Middleware\AdministratorOnly;
 use App\Models\Company;
 use App\Models\StudentData;
 use Illuminate\Http\Request;
@@ -66,8 +67,8 @@ Route::prefix('/companies')->middleware("auth:sanctum")->group(function () {
     Route::delete("/{id}", [CompanyController::class, 'delete']);
 });
 
-Route::prefix('/external')->middleware("auth:sanctum")->group(function () {
-    Route::prefix('/keys')->group(function () {
+Route::prefix('/external')->group(function () {
+    Route::prefix('/keys')->middleware(['auth:sanctum', AdministratorOnly::class])->group(function () {
         Route::get("/", [ExternalApiController::class, 'all_keys'])->name("api.external.keys.create");
         Route::put("/", [ExternalApiController::class, 'create_key'])->name("api.external.keys.list");
         Route::delete("/{id}", [ExternalApiController::class, 'destroy_key'])->name("api.external.keys.delete");