diff --git a/cognite/extractorutils/__init__.py b/cognite/extractorutils/__init__.py
index f9e8b7a1..b4556360 100644
--- a/cognite/extractorutils/__init__.py
+++ b/cognite/extractorutils/__init__.py
@@ -16,5 +16,5 @@
 Cognite extractor utils is a Python package that simplifies the development of new extractors.
 """
 
-__version__ = "6.2.0"
+__version__ = "6.2.1"
 from .base import Extractor
diff --git a/cognite/extractorutils/uploader/files.py b/cognite/extractorutils/uploader/files.py
index ed615bf8..6921cf33 100644
--- a/cognite/extractorutils/uploader/files.py
+++ b/cognite/extractorutils/uploader/files.py
@@ -64,7 +64,7 @@ class IOFileUploadQueue(AbstractUploadQueue):
     def __init__(
         self,
         cdf_client: CogniteClient,
-        post_upload_function: Optional[Callable[[List[Event]], None]] = None,
+        post_upload_function: Optional[Callable[[List[FileMetadata]], None]] = None,
         max_queue_size: Optional[int] = None,
         max_upload_interval: Optional[int] = None,
         trigger_log_level: str = "DEBUG",
@@ -128,7 +128,7 @@ def upload(self) -> None:
             self.files_written.inc(self.upload_queue_size)
 
             try:
-                self._post_upload(self.upload_queue)
+                self._post_upload([el[0] for el in self.upload_queue])
             except Exception as e:
                 self.logger.error("Error in upload callback: %s", str(e))
             self.upload_queue.clear()
diff --git a/pyproject.toml b/pyproject.toml
index 1879dc49..6b34d28b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cognite-extractor-utils"
-version = "6.2.0"
+version = "6.2.1"
 description = "Utilities for easier development of extractors for CDF"
 authors = ["Mathias Lohne <mathias.lohne@cognite.com>"]
 license = "Apache-2.0"