diff --git a/pyproject.toml b/pyproject.toml
index 1833003e..0c0f1751 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,6 +66,7 @@ docs = [
   "ipython",
   "pydata_sphinx_theme",
   "seaborn",
+  "myst_nb",
   "myst-parser",         # Markdown in Sphinx
 ]