diff --git a/test/.gitignore b/test/.gitignore
index 0b26b76f2..a529b5d83 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -11,3 +11,4 @@
 /zdtm_ct
 /zdtm-tst-list
 /stats-restore
+/zdtm_mount_cgroups.lock