diff --git a/.github/workflows/clean-cache.yml b/.github/workflows/clean-cache.yml
index 36984a6a1..e88e46c01 100644
--- a/.github/workflows/clean-cache.yml
+++ b/.github/workflows/clean-cache.yml
@@ -1,6 +1,7 @@
 name: Clean up PR caches
 
 on:
+  workflow_call:
   pull_request_target:
     types:
       - closed