diff --git a/pyproject.toml b/pyproject.toml
index e76cb2015..6cf94aacd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,7 @@ dependencies = [
     "ipykernel>=6.30.1",
     "matplotlib>=3.10.6",
     "matplotlib-venn>=1.1.2",
+    "nbformat>=5.10.4",
     "numpy>=2.3.3",
     "pandas>=2.3.2",
     "plotly>=6.5.2",