diff --git a/loops/server/loginform.pt b/loops/server/loginform.pt
index bb39347..6ec5ef6 100644
--- a/loops/server/loginform.pt
+++ b/loops/server/loginform.pt
@@ -29,7 +29,7 @@
       <p><b i18n:translate="set-authentication-method">Set Authentication Method</b></p>
       <span i18n:translate="authentication-method">Authentication Method</span>:
         <select name="auth_method"
-                onchange="document.cookie=`loops_auth_method=${this.value}; path=/`"
+                onchange="document.cookie=`loops_auth_method=${this.value}; path=/; expires=Sun, 31 Jan 2027 12:00:00 UTC`"
                 tal:define="meth view/authMethod"
                 tal:attributes="value meth">
            <option value="legacy" i18n:translate="authentication-method-legacy"