diff --git a/.github/workflows/periodic.yml b/.github/workflows/periodic.yml
index d597bc5439..1514c3b315 100644
--- a/.github/workflows/periodic.yml
+++ b/.github/workflows/periodic.yml
@@ -1,6 +1,6 @@
 name: Periodic
 
-on:
+on: [workflow_dispatch]
   schedule:
     - cron:  '0 */2 * * *'