diff --git a/pyproject.toml b/pyproject.toml
index 5a6a96c41..a37aafdd1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,12 @@ doc = [
     "sphinx-argparse",
     "nbsphinx",
     "ipython",
+    "nibabel",
+    "nilearn",
+    "pandas",
     "pandoc",
+    "numpy",
+    "scipy",
     "sphinx_rtd_theme",
     "sphinx-click",
     "sphinxcontrib-apidoc ~=0.3.0",