diff --git a/diskimage_builder/elements/ironic-agent/package-installs.yaml b/diskimage_builder/elements/ironic-agent/package-installs.yaml
index e17668ffe..f63487f73 100644
--- a/diskimage_builder/elements/ironic-agent/package-installs.yaml
+++ b/diskimage_builder/elements/ironic-agent/package-installs.yaml
@@ -17,3 +17,4 @@ gdisk:
 kmod:
 psmisc:
 dosfstools:
+mdadm: