diff --git a/pyproject.toml b/pyproject.toml
index 56b7a9da..a405e6d5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ docs = [
     "myst-nb==1.2.0",
     "sphinx-book-theme==1.1.4",
     "sphinx-argparse==0.5.2",
-    "sphinx-toolbox==3.8.3",
+    "sphinx-toolbox==3.9.0",
 ]
 
 [project.scripts]