diff --git a/packages/auth/src/auth.ts b/packages/auth/src/auth.ts
index 9822f271..a4bc0ea4 100644
--- a/packages/auth/src/auth.ts
+++ b/packages/auth/src/auth.ts
@@ -10,6 +10,7 @@ import { env } from "next-runtime-env";
 
 import type { dbClient } from "@kan/db/client";
 import * as memberRepo from "@kan/db/repository/member.repo";
+import * as subscriptionRepo from "@kan/db/repository/subscription.repo";
 import * as userRepo from "@kan/db/repository/user.repo";
 import * as workspaceRepo from "@kan/db/repository/workspace.repo";
 import * as schema from "@kan/db/schema";
@@ -203,6 +204,24 @@ export const initAuth = (db: dbClient) => {
                     },
                   };
                 },
+                onSubscriptionComplete: async ({
+                  subscription,
+                  stripeSubscription,
+                }) => {
+                  // Set unlimited seats to true for pro plans
+                  if (subscription.plan === "pro") {
+                    await subscriptionRepo.updateByStripeSubscriptionId(
+                      db,
+                      stripeSubscription.id,
+                      {
+                        unlimitedSeats: true,
+                      },
+                    );
+                    console.log(
+                      `Pro subscription ${stripeSubscription.id} activated with unlimited seats`,
+                    );
+                  }
+                },
               },
             }),
           ]
diff --git a/packages/db/src/repository/workspace.repo.ts b/packages/db/src/repository/workspace.repo.ts
index 09dd19bb..3ef933d5 100644
--- a/packages/db/src/repository/workspace.repo.ts
+++ b/packages/db/src/repository/workspace.repo.ts
@@ -127,6 +127,7 @@ export const getByPublicIdWithMembers = (
           plan: true,
           status: true,
           seats: true,
+          unlimitedSeats: true,
           periodStart: true,
           periodEnd: true,
         },