diff --git a/Dockerfile b/Dockerfile
index 2d43e2a..3b6de84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,6 +21,7 @@ RUN set -eu && \
         dnsmasq \
         net-tools \
         qemu-utils \
+        genisoimage \
         ca-certificates \
         netcat-openbsd \
         qemu-system-arm \