diff --git a/app/main.py b/app/main.py
index 6ff6774..6ecb272 100644
--- a/app/main.py
+++ b/app/main.py
@@ -45,7 +45,7 @@ app.add_middleware(
     secret_key=SESSION_SECRET,
     same_site="lax",
     https_only=SESSION_COOKIE_SECURE,
-    cookie_name="fleetledger_session",
+    session_cookie="fleetledger_session",
     max_age=60 * 60 * 24 * 30,  # 30 days
 )