diff --git a/src/OAuth2User.ts b/src/OAuth2User.ts
index 64d2eb6..a1df73f 100644
--- a/src/OAuth2User.ts
+++ b/src/OAuth2User.ts
@@ -255,7 +255,7 @@ export class OAuth2User implements AuthClient {
       this.#code_verifier = options.code_challenge;
     }
     const code_challenge = this.#code_challenge;
-    const url = new URL("https://twitter.com/i/oauth2/authorize");
+    const url = new URL("https://x.com/i/oauth2/authorize");
     url.search = buildQueryString({
       ...options,
       client_id,