diff --git a/pyproject.toml b/pyproject.toml
index 34a5b11d..eb8db076 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ tests = ["pytest==8.3.2", "pytest-cov==5.0.0", "pyfakefs==5.6.0"]
 
 doc = [
     "Sphinx==8.0.2",
-    "ansys-sphinx-theme==1.0.8",
+    "ansys-sphinx-theme==1.0.9",
     "numpydoc==1.8.0",
     "sphinx-copybutton==0.5.2",
 ]