1 files changed, 17 insertions, 0 deletions
diff --git a/MediaBrowser.Api/HttpHandlers/ImageHandler.cs b/MediaBrowser.Api/HttpHandlers/ImageHandler.cs
index c168569cd..d3aaf27ff 100644
--- a/MediaBrowser.Api/HttpHandlers/ImageHandler.cs
+++ b/MediaBrowser.Api/HttpHandlers/ImageHandler.cs
@@ -137,6 +137,23 @@ namespace MediaBrowser.Api.HttpHandlers
             return date;
         }
 
+        protected override async Task<string> GetETag()
+        {
+            string tag = string.Empty;
+
+            var entity = await GetSourceEntity().ConfigureAwait(false);
+
+            foreach (var processor in Kernel.Instance.ImageProcessors)
+            {
+                if (processor.IsConfiguredToProcess(entity, ImageType, ImageIndex))
+                {
+                    tag += processor.ProcessingConfigurationDateLastModifiedUtc.Ticks.ToString();
+                }
+            }
+
+            return tag;
+        }
+
         private int ImageIndex
         {
             get