diff --git a/src/lib/supertokens/server.ts b/src/lib/supertokens/server.ts
index d26c455..2d7d4d7 100644
--- a/src/lib/supertokens/server.ts
+++ b/src/lib/supertokens/server.ts
@@ -25,7 +25,7 @@ export const backendConfig = (): TypeInput => {
         cookieSameSite: "lax",
         cookieSecure: process.env.NODE_ENV === "production",
         cookieDomain: process.env.COOKIE_DOMAIN || undefined,
-        olderCookieDomain: undefined,
+        olderCookieDomain: process.env.COOKIE_DOMAIN || undefined,
         antiCsrf: process.env.NODE_ENV === "production" ? "VIA_TOKEN" : "NONE",
 
         sessionExpiredStatusCode: 440,