diff --git a/src/DBAL/Types/LocalizedType.php b/src/DBAL/Types/LocalizedType.php
index c3d66a5..8e9834e 100644
--- a/src/DBAL/Types/LocalizedType.php
+++ b/src/DBAL/Types/LocalizedType.php
@@ -7,6 +7,7 @@
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Types\ConversionException;
 use Doctrine\DBAL\Types\JsonType;
+use JsonException;
 
 /**
  * Type specialized to store localized data as JSON.
@@ -53,7 +54,10 @@ public function convertToDatabaseValue(mixed $value, AbstractPlatform $platform)
             return '';
         }
 
-        // @phpstan-ignore-next-line
-        return parent::convertToDatabaseValue($value, $platform);
+        try {
+            return json_encode($value, JSON_THROW_ON_ERROR | JSON_PRESERVE_ZERO_FRACTION | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+        } catch (JsonException $e) {
+            throw ConversionException::conversionFailedSerialization($value, 'json', $e->getMessage(), $e);
+        }
     }
 }
diff --git a/tests/DBAL/Types/LocalizedTypeTest.php b/tests/DBAL/Types/LocalizedTypeTest.php
index a6c3b0b..6b39c6f 100644
--- a/tests/DBAL/Types/LocalizedTypeTest.php
+++ b/tests/DBAL/Types/LocalizedTypeTest.php
@@ -51,4 +51,15 @@ public function testConvertToPHPValueWillThrowIfNotJsonArray(): void
         $this->expectExceptionMessage("Could not convert database value to 'json' as an error was triggered by the unserialization: 'value in DB is not a JSON encoded associative array'");
         $this->type->convertToPHPValue('"foo"', $this->platform);
     }
+
+    public function testMustAlwaysStoreUnescaped(): void
+    {
+        $original = ['fr' => 'aéa/a💕a'];
+
+        $actualDB = $this->type->convertToDatabaseValue($original, $this->platform);
+        self::assertSame('{"fr":"aéa/a💕a"}', $actualDB, 'unicode and slashes should not be escaped');
+
+        $actualPHP = $this->type->convertToPHPValue($actualDB, $this->platform);
+        self::assertSame($original, $actualPHP, 'can be re-converted back to the exact same original');
+    }
 }