diff --git a/pyproject.toml b/pyproject.toml
index 2f7d677c..3ca06df4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,6 +69,7 @@ changelog-header = "###############"
 version-header = "="
 
 [tool.pdm]
+ignore_package_warnings = ["sphinx"]
 
 [tool.pdm.scripts]
 docbuild = "invoke docbuild"