diff --git a/doc/sphinx/conf.py b/doc/sphinx/conf.py
index 13e3081d72..d03da1084d 100644
--- a/doc/sphinx/conf.py
+++ b/doc/sphinx/conf.py
@@ -119,6 +119,8 @@ def __call__(self, block, block_vars, gallery_conf):
     }
 }
 
+suppress_warnings = ["config.cache"]  # Triggered by objects in sphinx_gallery_conf
+
 # Override sphinx-gallery's method for determining which examples should be executed.
 # There's really no way to achieve this with the `filename_pattern` option, and
 # `ignore_pattern` excludes the example entirely.