diff --git a/js/common/src/subscription-functions.ts b/js/common/src/subscription-functions.ts
index a2c976812..91089f0bf 100644
--- a/js/common/src/subscription-functions.ts
+++ b/js/common/src/subscription-functions.ts
@@ -56,6 +56,7 @@ export async function createCheckoutSession(
       mode: "subscription",
       success_url: options?.successUrl || `${webappUrl}/app/billing?success=true`,
       cancel_url: options?.cancelUrl || `${webappUrl}/app/billing?canceled=true`,
+      allow_promotion_codes: true,
       metadata: {
         userId,
         period,