diff --git a/.github/workflows/lock.yml b/.github/workflows/lock.yml
new file mode 100644
index 0000000..8ed25fc
--- /dev/null
+++ b/.github/workflows/lock.yml
@@ -0,0 +1,21 @@
+name: Lock old issues and pull requests that are closed
+
+on:
+  schedule:
+    - cron: '0 3 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: lock
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v3
+        with:
+          issue-inactive-days: '56'