diff --git a/infra/prod/Dockerfile b/infra/prod/Dockerfile
index 878e97d..654cda3 100644
--- a/infra/prod/Dockerfile
+++ b/infra/prod/Dockerfile
@@ -61,6 +61,7 @@ RUN rm -f /etc/nginx/sites-enabled/default
 # Configs
 COPY infra/prod/supervisord.conf /etc/supervisor/conf.d/app.conf
 COPY infra/prod/nginx.conf /etc/nginx/sites-enabled/lesstime.conf
+COPY infra/prod/maintenance.html /var/www/html/public/maintenance.html
 
 # Backend from stage 1
 COPY --from=backend-build /app /var/www/html
diff --git a/infra/prod/deploy.sh b/infra/prod/deploy.sh
index 7ae8a77..2b1eb16 100755
--- a/infra/prod/deploy.sh
+++ b/infra/prod/deploy.sh
@@ -8,6 +8,9 @@ export LESSTIME_IMAGE_TAG="$TAG"
 
 echo "==> Deploying lesstime:${TAG}..."
 
+echo "==> Enabling maintenance mode..."
+touch maintenance.on
+
 echo "==> Pulling image..."
 sudo docker compose pull
 
@@ -24,5 +27,8 @@ echo "==> Clearing cache..."
 sudo docker compose exec -T -u www-data app php bin/console cache:clear --env=prod
 sudo docker compose exec -T -u www-data app php bin/console cache:warmup --env=prod
 
+echo "==> Disabling maintenance mode..."
+rm -f maintenance.on
+
 VERSION=$(sudo docker compose exec -T app cat config/version.yaml | grep 'app.version' | awk -F"'" '{print $2}')
 echo "==> Deployed v${VERSION}"
diff --git a/infra/prod/maintenance.html b/infra/prod/maintenance.html
new file mode 100644
index 0000000..c8ef615
--- /dev/null
+++ b/infra/prod/maintenance.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html lang="fr">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Maintenance en cours</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+            background-color: #f3f4f6;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            min-height: 100vh;
+            margin: 0;
+        }
+        .container {
+            background: white;
+            border-radius: 12px;
+            box-shadow: 0 4px 24px rgba(0,0,0,0.10);
+            padding: 48px 40px;
+            max-width: 480px;
+            text-align: center;
+        }
+        .icon {
+            font-size: 48px;
+            margin-bottom: 16px;
+        }
+        h1 {
+            color: #1f2937;
+            font-size: 24px;
+            margin: 0 0 16px;
+        }
+        p {
+            color: #6b7280;
+            font-size: 16px;
+            line-height: 1.6;
+            margin: 0;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="icon">&#128736;</div>
+        <h1>Maintenance en cours</h1>
+        <p>L'application est temporairement indisponible pour mise à jour. Elle sera de retour dans quelques instants.</p>
+    </div>
+</body>
+</html>
diff --git a/infra/prod/nginx.conf b/infra/prod/nginx.conf
index e058faf..afe9182 100644
--- a/infra/prod/nginx.conf
+++ b/infra/prod/nginx.conf
@@ -2,6 +2,23 @@ server {
     listen 80;
     server_name _;
 
+    # Maintenance mode
+    if (-f /var/www/html/maintenance.on) {
+        return 503;
+    }
+
+    error_page 503 @maintenance;
+
+    location @maintenance {
+        root /var/www/html/public;
+        rewrite ^(.*)$ /maintenance.html break;
+    }
+
+    location = /maintenance.html {
+        root /var/www/html/public;
+        internal;
+    }
+
     root /var/www/html/frontend/.output/public;
     index index.html;
 
