diff --git a/pyproject.toml b/pyproject.toml
index c001b32..7b1fefe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,3 +2,5 @@
 formats = "ipynb,py:light" 
 cell_metadata_filter = "-all"
 notebook_metadata_filter = "-all" 
+text_representation = {extension = ".py", format_name = "light", formats = "ipynb,py:light"}
+ipynb_only = "code"