diff --git a/.github/workflows/purce_badge_caches.yml b/.github/workflows/purce_badge_caches.yml
index 48ba131..334314f 100644
--- a/.github/workflows/purce_badge_caches.yml
+++ b/.github/workflows/purce_badge_caches.yml
@@ -1,8 +1,8 @@
 name: Purge badge caches
 
 on:
-  issues:
-    types: [closed]
+  schedule:
+    - cron: "0 1 * * *"
   workflow_dispatch:
 jobs:
   build: