diff --git a/deno_server.ts b/deno_server.ts
index d1907a9..1679c23 100644
--- a/deno_server.ts
+++ b/deno_server.ts
@@ -8,7 +8,9 @@ const States = Object.freeze({
 
 // Create a pool of workers.
 const workerPool: { worker: Worker; inUse: boolean }[] = [];
-const numWorkers = navigator.hardwareConcurrency;
+// Allow the number of workers to be configured via an environment variable.
+const numWorkers =
+  parseInt(Deno.env.get("NUM_WORKERS") || "0") || navigator.hardwareConcurrency;
 
 for (let i = 0; i < numWorkers; i++) {
   const worker = new Worker(new URL("./worker.ts", import.meta.url).href, {
@@ -92,6 +94,8 @@ async function handler(req: Request): Promise<Response> {
   }
 }
 
-console.log(`⚡ Deno server ready on :8000 with ${numWorkers} workers.`);
+const port = parseInt(Deno.env.get("PORT") || "8000");
 
-await serve(handler, { port: 8000 });
+console.log(`⚡ Deno server ready on :${port} with ${numWorkers} workers.`);
+
+await serve(handler, { port });