diff --git a/PLACEHOLDER.txt b/PLACEHOLDER.txt
new file mode 100644
index 0000000..456e14e
--- /dev/null
+++ b/PLACEHOLDER.txt
@@ -0,0 +1 @@
+Just to test if the failure in https://github.com/ruby/mmtk/actions/runs/15337982573/job/43158736092?pr=36 is reproducible.