diff --git a/pyproject.toml b/pyproject.toml
index 53b786e7..3f1dcad7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,7 +63,7 @@ sphinx_autodoc_typehints = { version = "1.14.1", optional = true }
 sphinx-notfound-page = { version = "0.8", optional = true }
 sphinx-copybutton = { version = "0.5.0", optional = true }
 enum_tools = { version = "0.9.0.post1", optional = true }
-sphinx-toolbox = { version = "3.1.0", optional = true }
+sphinx-toolbox = { version = "3.1.1", optional = true }
 jupytext = { version = "1.13.8", optional = true }
 nbsphinx = { version = "0.8.9", optional = true }