diff --git a/docs/tutorials/notebooks b/docs/tutorials/notebooks
index 5560f808..421c485c 160000
--- a/docs/tutorials/notebooks
+++ b/docs/tutorials/notebooks
@@ -1 +1 @@
-Subproject commit 5560f8088a33fa5519b97b1bfd4c96616cf1fc75
+Subproject commit 421c485c3983016cd849ed889912b1c7c26acb9c
diff --git a/ehrapy/io/_write.py b/ehrapy/io/_write.py
index b4d8ba04..2726d2e3 100644
--- a/ehrapy/io/_write.py
+++ b/ehrapy/io/_write.py
@@ -30,8 +30,8 @@ def write(
     Args:
         filename: File name or path to write the file to
         adata: Annotated data matrix.
-        extension: File extension. One of h5ad, csv
-        compression: Optional file compression. One of gzip, lzf
+        extension: File extension. One of 'h5ad', 'csv'. Defaults to None which infers the extension from the filename.
+        compression: Optional file compression. One of 'gzip', 'lzf'. Defaults to 'gzip'
         compression_opts: See http://docs.h5py.org/en/latest/high/dataset.html.
 
     Examples: