diff --git a/Jellyfin.Plugin.JavTube/Constant.cs b/Jellyfin.Plugin.JavTube/Constant.cs
index 58452f3..69e697e 100644
--- a/Jellyfin.Plugin.JavTube/Constant.cs
+++ b/Jellyfin.Plugin.JavTube/Constant.cs
@@ -8,5 +8,7 @@ public static class Constant
 
     public const string Guid = "df87283d-7224-4f9c-a448-3433d9cf278a";
 
+    public const string Rating = "JP-18+";
+
     public static readonly string UserAgent = $"{typeof(Plugin).Namespace}/{Plugin.Instance.Version}";
 }
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