diff --git a/docs/task_on_kart.rst b/docs/task_on_kart.rst
index 69702df4..cc48ac37 100644
--- a/docs/task_on_kart.rst
+++ b/docs/task_on_kart.rst
@@ -90,6 +90,7 @@ It is also possible to specify a file format other than pkl. The supported file
 - .feather
 - .png
 - .jpg
+- .ini
 
 
 If dump something other than the above, can use :func:`~gokart.TaskOnKart.make_model_target`.
diff --git a/gokart/file_processor.py b/gokart/file_processor.py
index 9dda5658..218d0dfa 100644
--- a/gokart/file_processor.py
+++ b/gokart/file_processor.py
@@ -269,6 +269,7 @@ def dump(self, obj, file):
 def make_file_processor(file_path: str, store_index_in_feather: bool) -> FileProcessor:
     extension2processor = {
         '.txt': TextFileProcessor(),
+        '.ini': TextFileProcessor(),
         '.csv': CsvFileProcessor(sep=','),
         '.tsv': CsvFileProcessor(sep='\t'),
         '.pkl': PickleFileProcessor(),