diff --git a/src/Jackett.Server/Services/ServerService.cs b/src/Jackett.Server/Services/ServerService.cs
index daf1497d6..1c3c695bc 100644
--- a/src/Jackett.Server/Services/ServerService.cs
+++ b/src/Jackett.Server/Services/ServerService.cs
@@ -258,6 +258,30 @@ namespace Jackett.Server.Services
                 logger.Error(e, "Error while checking the username");
             }
 
+            //Warn user that they are using an old version of Jackett
+            try
+            {
+                string appFolder = configService.ApplicationFolder();
+                string dllPath = Path.Combine(appFolder, "Jackett.Common.dll");
+
+                if (File.Exists(dllPath))
+                {
+                    DateTime creation = File.GetCreationTime(dllPath);
+
+                    if (creation < DateTime.Now.AddMonths(-3))
+                    {
+                        string version = configService.GetVersion();
+                        string notice = $"Your version of Jackett v{version} is very old. Multiple indexers are likely to fail when using an old version. Update to the latest version of Jackett.";
+                        _notices.Add(notice);
+                        logger.Error(notice);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                logger.Error(e, "Error while checking build date of Jackett.Common");
+            }
+
             CultureInfo.DefaultThreadCurrentCulture = new CultureInfo("en-US");
             // Load indexers
             indexerService.InitIndexers(configService.GetCardigannDefinitionsFolders());