diff --git a/station_announcer/__init__.py b/station_announcer/__init__.py
index 7c375c4..49f5339 100644
--- a/station_announcer/__init__.py
+++ b/station_announcer/__init__.py
@@ -1,14 +1,17 @@
 """Package initialization for the alt text generator app."""
 
+import sys
 from pathlib import Path
 
 from flask import Flask
 
+sys.path.append("/home/edward/src/2024/UniAuth")  # isort:skip
+
 from .cache import AltTextCache
 from .config import load_settings
 from .immich import ImmichClient
-from .openai_client import AltTextGenerator
 from .mastodon import MastodonClient
+from .openai_client import AltTextGenerator
 
 
 def create_app() -> Flask:
@@ -26,6 +29,9 @@ def create_app() -> Flask:
 
     secret_key = app.config.get("SECRET_KEY") or "dev-secret-key"
     app.config["SECRET_KEY"] = secret_key
+    app.config["UNIAUTH_URL"] = "https://edwardbetts.com/UniAuth"
+    app.config["REQUIRE_AUTH"] = True
+    app.config["AUTH_CALLBACK_ENDPOINT"] = "main.auth_callback"
 
     instance_dir = Path(app.instance_path)
     instance_dir.mkdir(parents=True, exist_ok=True)
diff --git a/station_announcer/routes.py b/station_announcer/routes.py
index c99ffa4..0c92e73 100644
--- a/station_announcer/routes.py
+++ b/station_announcer/routes.py
@@ -5,6 +5,7 @@ from __future__ import annotations
 import base64
 from datetime import datetime
 
+import UniAuth.auth
 from flask import (
     Blueprint,
     Response,
@@ -105,6 +106,15 @@ def _unique_asset_ids(values: list[str]) -> list[str]:
 MAX_MEDIA_ATTACHMENTS = 4
 
 
+bp.before_request(UniAuth.auth.require_authentication)
+
+
+@bp.route("/callback")
+def auth_callback():
+    """Process the authentication callback."""
+    return UniAuth.auth.auth_callback()
+
+
 @bp.route("/")
 def index():
     return redirect(url_for("main.compose_select"))