diff --git a/.github/sync.yml b/.github/sync.yml
index 5d8323f..767245e 100644
--- a/.github/sync.yml
+++ b/.github/sync.yml
@@ -28,6 +28,8 @@ group:
         dest: .github/workflows/issue-labeler.yml
       - source: synced-files/.github/workflows/check-pr-title.yml
         dest: .github/workflows/check-pr-title.yml
+      - source: synced-files/.github/workflows/lock-threads.yml
+        dest: .github/workflows/lock-threads.yml
     repos: |
       realm/realm-js
       realm/realm-java
@@ -53,6 +55,8 @@ group:
         dest: .github/auto_assign.yml
       - source: synced-files/.github/workflows/check-pr-title.yml
         dest: .github/workflows/check-pr-title.yml
+      - source: synced-files/.github/workflows/lock-threads.yml
+        dest: .github/workflows/lock-threads.yml
     repos: |
       realm/realm-core
 
diff --git a/synced-files/.github/workflows/lock-threads.yml b/synced-files/.github/workflows/lock-threads.yml
new file mode 100644
index 0000000..e359b34
--- /dev/null
+++ b/synced-files/.github/workflows/lock-threads.yml
@@ -0,0 +1,24 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+  discussions: write
+
+concurrency:
+  group: lock-threads
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v5
+        with:
+          issue-inactive-days: 30
+          pr-inactive-days: 30
+          log-output: true
\ No newline at end of file