diff --git a/apps/workflows/src/cron/monitor.ts b/apps/workflows/src/cron/monitor.ts
index e3f86dac..a0d2935f 100644
--- a/apps/workflows/src/cron/monitor.ts
+++ b/apps/workflows/src/cron/monitor.ts
@@ -31,7 +31,6 @@ const redis = Redis.fromEnv();
 
 const client = new CloudTasksClient({
   projectId: env().GCP_PROJECT_ID,
-  fallback: "rest",
   credentials: {
     client_email: env().GCP_CLIENT_EMAIL,
     private_key: env().GCP_PRIVATE_KEY.replaceAll("\\n", "\n"),
diff --git a/apps/workflows/src/lib/native-fetch.ts b/apps/workflows/src/lib/native-fetch.ts
deleted file mode 100644
index e77c193f..00000000
--- a/apps/workflows/src/lib/native-fetch.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-// google-gax (Cloud Tasks) routes through node-fetch unless `window.fetch` exists,
-// and node-fetch on Deno's node:http shim costs ~5x the CPU of native fetch.
-// Aliasing window to globalThis exposes window.fetch so google-gax picks native fetch.
-// It must be globalThis (not a bare {fetch}) so @t3-oss/env's `"Deno" in window`
-// server-detection still sees Deno and treats this as a server, not the browser.
-(globalThis as { window?: unknown }).window ??= globalThis;
diff --git a/apps/workflows/src/serve.ts b/apps/workflows/src/serve.ts
index f6ee2a32..6f520562 100644
--- a/apps/workflows/src/serve.ts
+++ b/apps/workflows/src/serve.ts
@@ -1,6 +1,5 @@
 /// <reference lib="deno.ns" />
 
-import "./lib/native-fetch";
 import { getLogger } from "@logtape/logtape";
 
 import { env } from "./env";