diff --git a/.github/workflows/stubtest-unused-whitelist.yml b/.github/workflows/stubtest-unused-whitelist.yml
index 107368bc8..b863b0779 100644
--- a/.github/workflows/stubtest-unused-whitelist.yml
+++ b/.github/workflows/stubtest-unused-whitelist.yml
@@ -1,8 +1,9 @@
 name: Find unused stubtest whitelist entries
 
 on:
+  workflow_dispatch:
   schedule:
-    - cron: '0 4 * * *'
+    - cron: '0 4 * * SAT'
 
 jobs:
   stubtest: