diff --git a/backend/src/config/index.ts b/backend/src/config/index.ts
index ae73fa8ac..62b09c93d 100644
--- a/backend/src/config/index.ts
+++ b/backend/src/config/index.ts
@@ -10,7 +10,7 @@ Decimal.set({
 })
 
 const constants = {
-  DB_VERSION: '0047-messages_tables',
+  DB_VERSION: '0048-add_user_contacts_table',
   DECAY_START_TIME: new Date('2021-05-13 17:46:31-0000'), // GMT+0
   LOG4JS_CONFIG: 'log4js-config.json',
   // default log level on production should be info
diff --git a/database/entity/0047-add_user_contacts_table/User.ts b/database/entity/0048-add_user_contacts_table/User.ts
similarity index 100%
rename from database/entity/0047-add_user_contacts_table/User.ts
rename to database/entity/0048-add_user_contacts_table/User.ts
diff --git a/database/entity/0047-add_user_contacts_table/UserContact.ts b/database/entity/0048-add_user_contacts_table/UserContact.ts
similarity index 100%
rename from database/entity/0047-add_user_contacts_table/UserContact.ts
rename to database/entity/0048-add_user_contacts_table/UserContact.ts
diff --git a/database/entity/User.ts b/database/entity/User.ts
index 1e0017b72..3191148ee 100644
--- a/database/entity/User.ts
+++ b/database/entity/User.ts
@@ -1 +1 @@
-export { User } from './0047-add_user_contacts_table/User'
+export { User } from './0048-add_user_contacts_table/User'
diff --git a/database/entity/UserContact.ts b/database/entity/UserContact.ts
index e596489da..dfa1ab4a1 100644
--- a/database/entity/UserContact.ts
+++ b/database/entity/UserContact.ts
@@ -1 +1 @@
-export { UserContact } from './0047-add_user_contacts_table/UserContact'
+export { UserContact } from './0048-add_user_contacts_table/UserContact'
diff --git a/database/migrations/0047-add_user_contacts_table.ts b/database/migrations/0048-add_user_contacts_table.ts
similarity index 98%
rename from database/migrations/0047-add_user_contacts_table.ts
rename to database/migrations/0048-add_user_contacts_table.ts
index b3c6be03e..49f647e39 100644
--- a/database/migrations/0047-add_user_contacts_table.ts
+++ b/database/migrations/0048-add_user_contacts_table.ts
@@ -63,8 +63,10 @@ export async function upgrade(queryFn: (query: string, values?: any[]) => Promis
 }
 
 export async function downgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
-  // reconstruct the previous email back from contacts to users table
+  // this step comes after verification and test
   await queryFn('ALTER TABLE users ADD COLUMN email varchar(255) NULL AFTER privkey;')
+
+  // reconstruct the previous email back from contacts to users table
   const contacts = await queryFn(`SELECT c.id, c.email, c.user_id FROM user_contacts as c`)
   for (const id in contacts) {
     const contact = contacts[id]