diff --git a/pineappl_py/pyproject.toml b/pineappl_py/pyproject.toml
index 64202455..cb088610 100644
--- a/pineappl_py/pyproject.toml
+++ b/pineappl_py/pyproject.toml
@@ -24,7 +24,13 @@ classifiers = [
 dependencies = ["numpy>=1.16.0,<2.0.0"]
 
 [project.optional-dependencies]
-docs = ["sphinx>=6.2.1", "sphinx_rtd_theme>=1.2.2", "sphinxcontrib-bibtex>=2.5.0", "nbsphinx>=0.9.2"]
+cli = ["pineappl-cli"]
+docs = [
+  "sphinx>=6.2.1",
+  "sphinx_rtd_theme>=1.2.2",
+  "sphinxcontrib-bibtex>=2.5.0",
+  "nbsphinx>=0.9.2",
+]
 test = ["pytest", "pytest-cov"]
 
 [project.urls]