diff --git a/src/app.py b/src/app.py
index d5ddb6f..1818d95 100644
--- a/src/app.py
+++ b/src/app.py
@@ -7,6 +7,7 @@ from dash import Dash, Input, Output, State, dcc, html, page_container, page_reg
 from dotenv import load_dotenv
 from flask import Response
 
+from src.auth.setup import init_auth
 from src.utils import DEVELOPMENT
 from src.utils.cache import cache
 
@@ -50,6 +51,8 @@ cache.init_app(
     },
 )
 
+init_auth(app.server)
+
 
 # robots.txt
 @app.server.route("/robots.txt")
diff --git a/tests/auth/test_app_integration.py b/tests/auth/test_app_integration.py
new file mode 100644
index 0000000..aa736e7
--- /dev/null
+++ b/tests/auth/test_app_integration.py
@@ -0,0 +1,8 @@
+def test_app_imports_cleanly(users_db_path):
+    from src.app import app
+
+    assert app is not None
+    # Flask-Login manager attaché
+    assert "login_manager" in app.server.extensions or hasattr(
+        app.server, "login_manager"
+    )