diff --git a/pyproject.toml b/pyproject.toml
index ff1e730dd7..a19d4ac164 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -210,6 +210,10 @@ exclude = [
 ]
 namespaces = true
 
+[tool.setuptools.exclude-package-data]
+# Remove ruff.toml when installing vendored packages (#4652)
+"*" = ["ruff.toml"]
+
 [tool.distutils.sdist]
 formats = "zip"