diff --git a/requirements/requirements_doc.txt b/requirements/requirements_doc.txt
index b2efdbaa..ba450e03 100644
--- a/requirements/requirements_doc.txt
+++ b/requirements/requirements_doc.txt
@@ -1,7 +1,7 @@
 Sphinx==5.3.0
 jupyter_sphinx==0.4.0
 numpydoc==1.5.0
-ansys-sphinx-theme==0.8.0
+ansys-sphinx-theme==0.9.9
 pypandoc==1.10
 pytest-sphinx==0.5.0
 sphinx-autobuild==2021.3.14