diff --git a/.github/actionlint.yaml b/.github/actionlint.yaml
new file mode 100644
index 000000000..dc6362a59
--- /dev/null
+++ b/.github/actionlint.yaml
@@ -0,0 +1,4 @@
+# Custom runner labels actionlint can't know about.
+self-hosted-runner:
+  labels:
+    - macos-release  # org larger runner (M2 Pro), used by release.yml