diff --git a/opennebula-images/centos7-build-luks-opennebula-image.sh b/opennebula-images/centos7-build-luks-opennebula-image.sh
index f3d34c8..69a5c64 100755
--- a/opennebula-images/centos7-build-luks-opennebula-image.sh
+++ b/opennebula-images/centos7-build-luks-opennebula-image.sh
@@ -61,7 +61,7 @@ if [ ! -f '/etc/centos-release' ]; then
 fi
 
 # Install requirements
-yum install -y qemu cryptsetup
+yum install -y qemu cryptsetup dnf
 
 # Create base RAW image (no LOOPBACK support in RHEL/CentOS).
 qemu-img create -f raw "$IMAGE_PATH" "$IMAGE_SIZE"