diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
new file mode 100644
index 0000000..b32774b
--- /dev/null
+++ b/.github/workflows/stale.yml
@@ -0,0 +1,19 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+permissions: {}
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639  # v9.1.0
+        with:
+          days-before-stale: 21
+          days-before-close: 7