diff --git a/pyproject.toml b/pyproject.toml
index 2746b5cd..6c512ce7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ doc = [
     "ansys-sphinx-theme==1.4.4",
     "sphinx-copybutton==0.5.2",
     "sphinx_design==0.6.1",
-    "sphinx_toolbox==3.10.0",
+    "sphinx_toolbox==4.0.0",
 ]
 freeze = [
     "pyinstaller==6.13.0",