diff --git a/functions/_middleware.ts b/functions/_middleware.ts
index 8d9ccfd..6866b65 100644
--- a/functions/_middleware.ts
+++ b/functions/_middleware.ts
@@ -41,6 +41,11 @@ async function setAuth(context: RequestContext) {
     );
 
     if (userData) context.data.current_user = JSON.parse(userData);
+    else
+      context.request.headers.append(
+        "set-cookie",
+        "_s=; HttpOnly; Max-Age=0; Path=/; Secure;"
+      );
 
     break;
   }