diff --git a/pyproject.toml b/pyproject.toml
index eac4d0e..06bf422 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,5 +22,6 @@ pytest = "^7.4.1"
 # ruff = "<0.2.0"
 
 [tool.jupytext.formats]
+"pills/tutorials/" = ".ipynb"
 "pills/tutorials/" = ".qmd"
 "pills/scripts/" = "py:percent"