--- a/blob.py
+++ b/blob.py
@@ -279,7 +279,8 @@
                  (propagated from
                  :meth:`gcloud.storage.bucket.Bucket.delete_blob`).
         """
-        return self.bucket.delete_blob(self.name, client=client)
+        return self.bucket.delete_blob(self.name, self.generation, 
+            client=client)

     def download_to_file(self, file_obj, encryption_key=None, client=None):
         """Download the contents of this blob into a file-like object.
--- a/bucket.py
+++ b/bucket.py
@@ -357,7 +357,7 @@
         client.connection.api_request(method='DELETE', path=self.path,
                                       _target_object=None)

-    def delete_blob(self, blob_name, client=None):
+    def delete_blob(self, blob_name, generation=None, client=None):
         """Deletes a blob from the current bucket.

         If the blob isn't found (backend 404), raises a
@@ -392,6 +392,8 @@
         """
         client = self._require_client(client)
         blob_path = Blob.path_helper(self.path, blob_name)
+        if generation:
+            blob_path += '?generation=%i' % generation
         # We intentionally pass `_target_object=None` since a DELETE
         # request has no response value (whether in a standard request or
         # in a batch request).