diff --git a/ErsatzTV/Controllers/ArtworkController.cs b/ErsatzTV/Controllers/ArtworkController.cs
index 5170da035..a0a1105cc 100644
--- a/ErsatzTV/Controllers/ArtworkController.cs
+++ b/ErsatzTV/Controllers/ArtworkController.cs
@@ -14,6 +14,7 @@ using Microsoft.AspNetCore.Mvc;
 
 namespace ErsatzTV.Controllers
 {
+    [ResponseCache(Duration = 3600)]
     [ApiController]
     [ApiExplorerSettings(IgnoreApi = true)]
     public class PostersController : ControllerBase