diff --git a/src/database/migration/migrations/20200601-fix-purchase-table.ts b/src/database/migration/migrations/20200601-fix-purchase-table.ts
new file mode 100644
index 0000000..65dc2ae
--- /dev/null
+++ b/src/database/migration/migrations/20200601-fix-purchase-table.ts
@@ -0,0 +1,45 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 - 2020 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { QueryInterface, Sequelize, Transaction } from 'sequelize'
+import { attributes as purchaseAttributes } from '../../purchase'
+
+export async function up (queryInterface: QueryInterface, sequelize: Sequelize) {
+  await sequelize.transaction({
+    type: Transaction.TYPES.EXCLUSIVE
+  }, async (transaction) => {
+    await queryInterface.renameTable('Purchases', 'PurchasesOld', { transaction })
+    await queryInterface.createTable('Purchases', purchaseAttributes, { transaction })
+
+    await sequelize.query(`
+      INSERT INTO Purchases (familyId, service, transactionId, type, loggedAt, previousFullVersionEndTime, newFullVersionEndTime)
+        SELECT familyId, service, transactionId, type, 0 AS loggedAt, 0 AS previousFullVersionEndTime, loggedAt AS newFullVersionEndTime
+        FROM PurchasesOld
+    `, { transaction })
+
+    await queryInterface.dropTable('PurchasesOld', { transaction })
+  })
+}
+
+export async function down (queryInterface: QueryInterface, sequelize: Sequelize) {
+  await sequelize.transaction({
+    type: Transaction.TYPES.EXCLUSIVE
+  }, async (transaction) => {
+    await queryInterface.removeColumn('Purchases', 'previousFullVersionEndTime', { transaction })
+    await queryInterface.removeColumn('Purchases', 'newFullVersionEndTime', { transaction })
+  })
+}
diff --git a/src/database/purchase.ts b/src/database/purchase.ts
index 8a10661..0b1f35b 100644
--- a/src/database/purchase.ts
+++ b/src/database/purchase.ts
@@ -1,6 +1,6 @@
 /*
  * server component for the TimeLimit App
- * Copyright (C) 2019 Jonas Lochmann
+ * Copyright (C) 2019 - 2020 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -45,9 +45,9 @@ export const attributes: SequelizeAttributes<PurchaseAttributes> = {
     primaryKey: true
   },
   type: createEnumColumn(['month', 'year']),
-  loggedAt: timestampColumn,
-  previousFullVersionEndTime: timestampColumn,
-  newFullVersionEndTime: timestampColumn
+  loggedAt: { ...timestampColumn },
+  previousFullVersionEndTime: { ...timestampColumn },
+  newFullVersionEndTime: { ...timestampColumn }
 }
 
 export const createPurchaseModel = (sequelize: Sequelize.Sequelize): PurchaseModelStatic => sequelize.define('Purchase', attributes) as PurchaseModelStatic