diff --git a/client/main.js b/client/main.js
index 53d9038..39b5bd0 100644
--- a/client/main.js
+++ b/client/main.js
@@ -47,7 +47,7 @@ const loading_done = () => {
     // https://tile.openstreetmap.org/{z}/{x}/{y}.png
     L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
         maxZoom: 19,
-        attribution: '© carto.com'
+        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors<br/>Données issues de l\'<a href="https://www.cts-strasbourg.eu/fr/portail-open-data/">OpenData de la CTS</a><br/>Logiciel distribué sous <a href="https://www.gnu.org/licenses/gpl-3.0.html">Licence GPL</a>'
     }).addTo(map);
 
     const lignes = {};
diff --git a/main.py b/main.py
index 77f0cd2..e523e06 100644
--- a/main.py
+++ b/main.py
@@ -10,8 +10,6 @@ from fastapi_cache.decorator import cache
 
 import requests
 
-from datetime import datetime
-
 from dotenv import load_dotenv
 import os
 
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..d4b833b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+fastapi==0.115.4
+fastapi_cache==0.1.0
+python-dotenv==1.0.1
+requests==2.32.3