diff --git a/django_translatable_fields/fields.py b/django_translatable_fields/fields.py
index 2646f00..3f92d6c 100644
--- a/django_translatable_fields/fields.py
+++ b/django_translatable_fields/fields.py
@@ -25,6 +25,7 @@ Version: 0.1.0
 """
 
 import json
+import os
 from django.db import models
 from django.core.exceptions import ValidationError
 from django.utils.translation import get_language, gettext_lazy as _