diff --git a/.github/workflows/triage-stale.yml b/.github/workflows/triage-stale.yml
new file mode 100644
index 00000000..ef99aa92
--- /dev/null
+++ b/.github/workflows/triage-stale.yml
@@ -0,0 +1,20 @@
+name: Close stale PRs
+on:
+    workflow_dispatch: {}
+    schedule:
+        - cron: "30 1 * * *"
+permissions: {}
+jobs:
+    close:
+        runs-on: ubuntu-24.04
+        permissions:
+            actions: write
+            issues: write
+            pull-requests: write
+        steps:
+            - uses: actions/stale@v9
+              with:
+                  operations-per-run: 100
+                  days-before-pr-stale: 180
+                  days-before-pr-close: 0
+                  close-pr-message: "This PR has been automatically closed because it has been stale for 180 days. If you wish to continue working on this PR, please ping a maintainer to reopen it."