diff --git a/imagekit/imagecache/__init__.py b/imagekit/imagecache/__init__.py
index 05414cc..dab06cd 100644
--- a/imagekit/imagecache/__init__.py
+++ b/imagekit/imagecache/__init__.py
@@ -1,6 +1,8 @@
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.importlib import import_module
 
+from imagekit.imagecache.base import PessimisticImageCacheBackend, NonValidatingImageCacheBackend
+
 _default_image_cache_backend = None