diff --git a/framework/core/src/Settings/DatabaseSettingsRepository.php b/framework/core/src/Settings/DatabaseSettingsRepository.php
index a74d68c37..06fb80970 100644
--- a/framework/core/src/Settings/DatabaseSettingsRepository.php
+++ b/framework/core/src/Settings/DatabaseSettingsRepository.php
@@ -22,7 +22,7 @@ class DatabaseSettingsRepository implements SettingsRepositoryInterface
         $this->database = $connection;
     }
 
-    public function all()
+    public function all(): array
     {
         return $this->database->table('settings')->pluck('value', 'key')->all();
     }
diff --git a/framework/core/src/Settings/SettingsRepositoryInterface.php b/framework/core/src/Settings/SettingsRepositoryInterface.php
index f42012353..82dfeebed 100644
--- a/framework/core/src/Settings/SettingsRepositoryInterface.php
+++ b/framework/core/src/Settings/SettingsRepositoryInterface.php
@@ -13,7 +13,7 @@ namespace Flarum\Settings;
 
 interface SettingsRepositoryInterface
 {
-    public function all();
+    public function all(): array;
 
     public function get($key, $default = null);