diff --git a/env.d.ts b/env.d.ts
index 0859147..dd2d888 100644
--- a/env.d.ts
+++ b/env.d.ts
@@ -17,6 +17,7 @@ declare namespace NodeJS {
     readonly NEXT_PUBLIC_SG721_CODE_ID: string
     readonly NEXT_PUBLIC_MINTER_CODE_ID: string
     readonly NEXT_PUBLIC_WHITELIST_CODE_ID: string
+    readonly NEXT_PUBLIC_SG721_UPDATABLE_V1_CODE_ID: string
 
     readonly NEXT_PUBLIC_PINATA_ENDPOINT_URL: string
     readonly NEXT_PUBLIC_API_URL: string
diff --git a/pages/contracts/sg721/migrate.tsx b/pages/contracts/sg721/migrate.tsx
index c73a361..1ed267f 100644
--- a/pages/contracts/sg721/migrate.tsx
+++ b/pages/contracts/sg721/migrate.tsx
@@ -21,6 +21,7 @@ import { useEffect, useState } from 'react'
 import { toast } from 'react-hot-toast'
 import { FaArrowRight } from 'react-icons/fa'
 import { useMutation } from 'react-query'
+import { SG721_UPDATABLE_V1_CODE_ID } from 'utils/constants'
 import { withMetadata } from 'utils/layout'
 import { links } from 'utils/links'
 
@@ -38,7 +39,7 @@ const Sg721MigratePage: NextPage = () => {
     title: 'Code ID',
     subtitle: 'Code ID of the New Sg721 contract',
     placeholder: '1',
-    defaultValue: 47,
+    defaultValue: SG721_UPDATABLE_V1_CODE_ID,
   })
 
   const contractState = useInputState({
@@ -107,8 +108,9 @@ const Sg721MigratePage: NextPage = () => {
           <NumberInput isRequired {...codeIdState} />
           <Alert type="info">
             <div className="inline-block">
-              Migrating a v1 contract to Code ID: 47 (sg721-updatable) will allow the creator to update the royalty
-              details and token metadata. Once the migration is complete, new functionalities can be performed using{' '}
+              Migrating a v1 contract to Code ID: {SG721_UPDATABLE_V1_CODE_ID} (sg721-updatable) will allow the creator
+              to update the royalty details and token metadata. Once the migration is complete, new functionalities can
+              be performed using{' '}
               <Anchor
                 className="font-bold text-plumbus hover:underline"
                 external
diff --git a/utils/constants.ts b/utils/constants.ts
index bf13826..70f7bda 100644
--- a/utils/constants.ts
+++ b/utils/constants.ts
@@ -1,6 +1,7 @@
 export const SG721_CODE_ID = parseInt(process.env.NEXT_PUBLIC_SG721_CODE_ID, 10)
 export const MINTER_CODE_ID = parseInt(process.env.NEXT_PUBLIC_MINTER_CODE_ID, 10)
 export const WHITELIST_CODE_ID = parseInt(process.env.NEXT_PUBLIC_WHITELIST_CODE_ID, 10)
+export const SG721_UPDATABLE_V1_CODE_ID = parseInt(process.env.NEXT_PUBLIC_SG721_UPDATABLE_V1_CODE_ID, 10)
 
 export const PINATA_ENDPOINT_URL = process.env.NEXT_PUBLIC_PINATA_ENDPOINT_URL
 export const NETWORK = process.env.NEXT_PUBLIC_NETWORK