diff --git a/Startup.cs b/Startup.cs
index f303064..03cb747 100644
--- a/Startup.cs
+++ b/Startup.cs
@@ -101,10 +101,10 @@ namespace GZTW.Pecklist
             {
                 OnPrepareResponse = context =>
                 {
-                    if (context.File.Name == "index.html")
+                    if (context.File.Name == "index.html" || context.File.Name == "sw.js" )
                     {
-                        context.Context.Response.Headers.Add("Cache-Control", "no-cache, no-store");
-                        context.Context.Response.Headers.Add("Expires", "-1");
+                        context.Context.Response.Headers.Add("Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0");
+                        // context.Context.Response.Headers.Add("Expires", "-1");
                     }
                 }
             });