diff --git a/libraries/deno-github-mod.ts b/libraries/deno-github-mod.ts
index 6d9b4b7..c571549 100644
--- a/libraries/deno-github-mod.ts
+++ b/libraries/deno-github-mod.ts
@@ -30,9 +30,20 @@ export class SshKey {
     }
 }
 
-export async function fetchKeys(username: string): Promise<Array<SshKey>> {
+export async function fetchKeys(
+    username: string,
+    timeout?: number,
+): Promise<Array<SshKey>> {
     const url = `https://github.com/${username}.keys`;
-    const response = await fetch(url, getFetchAutoProxyInit());
+    const fetchTimeout = timeout || 10000;
+    const abortController = new AbortController();
+    const timoutHandler = setTimeout(() => {
+        abortController.abort(`Timout ${fetchTimeout} ms`);
+    }, fetchTimeout);
+    const init = getFetchAutoProxyInit() || {};
+    init.signal = abortController.signal;
+    const response = await fetch(url, init);
     const responseText = await response.text();
+    clearTimeout(timoutHandler);
     return responseText.trim().split("\n").map((k) => SshKey.parseSshKey(k));
 }