diff --git a/.github/workflows/ghcr-prune.yml b/.github/workflows/ghcr-prune.yml
index f7669cbd2b3..c5066a2d667 100644
--- a/.github/workflows/ghcr-prune.yml
+++ b/.github/workflows/ghcr-prune.yml
@@ -4,7 +4,7 @@ on:
     # run once a day
     - cron: '0 2 * * *'
 
-workflow_dispatch:
+  workflow_dispatch:
 
 permissions: {}