diff --git a/web/src/pages/AuthCallback.tsx b/web/src/pages/AuthCallback.tsx
index 545b9ff..7a68980 100644
--- a/web/src/pages/AuthCallback.tsx
+++ b/web/src/pages/AuthCallback.tsx
@@ -14,6 +14,7 @@ export default function AuthCallback() {
       // Set cookie with 7 day expiration, accessible across all subdomains
       setCookie("jwt_token", token, {
         path: "/",
+        domain: "gophernest.net", // shared across all subdomains
         maxAge: 60 * 60 * 24 * 7, // 7 days in seconds
         secure: true,
         sameSite: "lax",