diff --git a/src/Entity/Gebruiker.php b/src/Entity/Gebruiker.php
index 3a25b41f..2044904e 100644
--- a/src/Entity/Gebruiker.php
+++ b/src/Entity/Gebruiker.php
@@ -15,7 +15,8 @@
  * @ORM\Entity(repositoryClass="GemeenteAmsterdam\FixxxSchuldhulp\Repository\GebruikerRepository")
  * @ORM\Table(
  *  uniqueConstraints={
- *      @ORM\UniqueConstraint(name="uq_username", columns={"username"})
+ *      @ORM\UniqueConstraint(name="uq_username", columns={"username"}),
+ *      @ORM\UniqueConstraint(name="uq_email", columns={"email"})
  *  }
  * )
  */
diff --git a/src/Migrations/Version20200818095526.php b/src/Migrations/Version20200818095526.php
new file mode 100644
index 00000000..de588c34
--- /dev/null
+++ b/src/Migrations/Version20200818095526.php
@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20200818095526 extends AbstractMigration
+{
+    public function up(Schema $schema) : void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'postgresql', 'Migration can only be executed safely on \'postgresql\'.');
+
+        $this->addSql('CREATE UNIQUE INDEX uq_email ON gebruiker (email)');
+    }
+
+    public function down(Schema $schema) : void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'postgresql', 'Migration can only be executed safely on \'postgresql\'.');
+
+        $this->addSql('CREATE SCHEMA public');
+        $this->addSql('DROP INDEX uq_email');
+    }
+}