diff --git a/.github/workflows/prune-branches.yml b/.github/workflows/prune-branches.yml
index 753fc7e42bc16..d86451a52d0a0 100644
--- a/.github/workflows/prune-branches.yml
+++ b/.github/workflows/prune-branches.yml
@@ -8,6 +8,8 @@ on:
     paths:
      - .github/workflows/prune-branches.yml
      - .github/workflows/prune-unused-branches.py
+  schedule:
+    - cron: '0 8 * * *' # Runs daily at 08:00 UTC.
 
 jobs:
   prune-branches: