diff --git a/scripts/ironic_generate-images.sh b/scripts/ironic_generate-images.sh
index df67d60d..c59aa711 100755
--- a/scripts/ironic_generate-images.sh
+++ b/scripts/ironic_generate-images.sh
@@ -52,7 +52,7 @@ function make-base-image {
 }
 
 # install needed binaries
-apt-get install -y kpartx parted qemu-utils
+apt-get install -y kpartx parted qemu-utils virtualenv
 
 mkdir -p ~/dib
 pushd ~/dib