diff --git a/conf.py b/conf.py
index 8af1d03..95d4773 100644
--- a/conf.py
+++ b/conf.py
@@ -29,6 +29,10 @@
 # This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
+# Suppress config.cache warnings
+# https://github.com/sphinx-doc/sphinx/issues/12300#issuecomment-2062238457
+suppress_warnings = ["config.cache"]
+
 
 # -- Options for HTML output -------------------------------------------------
 html_title = "FEMlium"