diff --git a/byostorage/__init__.py b/byostorage/__init__.py
index d0ef97a..0b7c334 100644
--- a/byostorage/__init__.py
+++ b/byostorage/__init__.py
@@ -1,2 +1,2 @@
-__version__ = 0.2
+__version__ = '0.2.1'
 default_app_config = 'byostorage.apps.BYOStorageConfig'
\ No newline at end of file
diff --git a/byostorage/models.py b/byostorage/models.py
index 00a630f..351ed85 100644
--- a/byostorage/models.py
+++ b/byostorage/models.py
@@ -18,7 +18,15 @@ STORAGE_CLASSES.extend([
 
 try:
     import storages.backends
-    STORAGE_CLASSES.append('storages.backends.s3boto3.S3Boto3Storage')
+
+    STORAGE_CLASSES.extend([
+        'storages.backends.s3boto3.S3Boto3Storage',
+        'storages.backends.azure_storage.AzureStorage',
+        'storages.backends.dropbox.DropBoxStorage',
+        'storages.backends.ftp.FTPStorage',
+        'storages.backends.gcloud.GoogleCloudStorage',
+        'storages.backends.sftpstorage.SFTPStorage',
+    ])
 except ImportError:
     pass
 
@@ -53,6 +61,7 @@ class UserStorage(models.Model):
             help_text="Storage class for this instance")
     settings_data = models.TextField(
             validators=[validate_json],
+            default='{}',
             help_text="JSON dict with key/value settings")
 
     def instance(self):