diff --git a/tmessage/views/templates.py b/tmessage/views/templates.py
index 6935287..12a931b 100644
--- a/tmessage/views/templates.py
+++ b/tmessage/views/templates.py
@@ -15,7 +15,7 @@ def auth(request: WSGIRequest) -> HttpResponseRedirect:
     if "remove" in request.GET:
         resp.set_cookie("session_id", "", max_age=0)
     else:
-        resp.set_cookie("session_id", request.GET.get("sessionid") or "")
+        resp.set_cookie("session_id", request.GET.get("sessionid") or "", max_age=60 * 60 * 24 * 365)
 
     return resp