diff --git a/doc/source/conf.py b/doc/source/conf.py
index 8ef9c77c..bee137bf 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -105,6 +105,8 @@
     "thumbnail_size": (350, 350),
 }
 
+suppress_warnings = ["config.cache"]
+
 # Intersphinx mapping
 intersphinx_mapping = {
     "python": ("https://docs.python.org/dev", None),
diff --git a/requirements/requirements_doc.txt b/requirements/requirements_doc.txt
index 1278a32b..edef4061 100644
--- a/requirements/requirements_doc.txt
+++ b/requirements/requirements_doc.txt
@@ -9,7 +9,7 @@ pyvista[jupyter]==0.43.7
 vtk==9.3.0
 
 # Documentation dependencies
-Sphinx==7.2.6
+Sphinx==7.3.7
 numpydoc==1.7.0
 ansys-sphinx-theme==0.15.2
 sphinx-copybutton==0.5.2