diff --git a/cloudflare/fetchevent.go b/cloudflare/fetchevent.go
index 9fa64ce..a4ff375 100644
--- a/cloudflare/fetchevent.go
+++ b/cloudflare/fetchevent.go
@@ -12,9 +12,8 @@ import (
 // It accepts an asynchronous task which the Workers runtime will execute before the handler terminates but without blocking the response.
 // see: https://developers.cloudflare.com/workers/runtime-apis/fetch-event/#waituntil
 func WaitUntil(ctx context.Context, task func()) {
-	executionContext := cfruntimecontext.GetExecutionContext(ctx)
-
-	executionContext.Call("waitUntil", jsutil.NewPromise(js.FuncOf(func(this js.Value, pArgs []js.Value) any {
+	exCtx := cfruntimecontext.GetExecutionContext(ctx)
+	exCtx.Call("waitUntil", jsutil.NewPromise(js.FuncOf(func(this js.Value, pArgs []js.Value) any {
 		resolve := pArgs[0]
 		go func() {
 			task()
@@ -23,3 +22,11 @@ func WaitUntil(ctx context.Context, task func()) {
 		return js.Undefined()
 	})))
 }
+
+// PassThroughOnException prevents a runtime error response when the Worker script throws an unhandled exception.
+// Instead, the request forwards to the origin server as if it had not gone through the worker.
+// see: https://developers.cloudflare.com/workers/runtime-apis/fetch-event/#passthroughonexception
+func PassThroughOnException(ctx context.Context) {
+	exCtx := cfruntimecontext.GetExecutionContext(ctx)
+	exCtx.Call("passThroughOnException")
+}