diff --git a/docs/source/conf.py b/docs/source/conf.py
index 908702a1..71fe5dd8 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -75,6 +75,9 @@
 # make `filter` a cross-reference to the Python function “filter”.
 default_role = "py:obj"
 
+# list of warning types to suppress
+suppress_warnings = ["config.cache"]
+
 # -- options for HTML output -------------------------------------------------
 html_theme = "pydata_sphinx_theme"
 html_theme_options = {