diff --git a/image/build.sh b/image/build.sh
index f8b79121950b568ebf1b9531f112d9e7ae75f48f..08d48359c1f9bdc2252caf7c3530e7049dba1252 100755
--- a/image/build.sh
+++ b/image/build.sh
@@ -8,5 +8,5 @@ touch -r ../deployments/hadoop-single/site.pp.tmpl ../site.pp
 sudo /usr/sbin/build-openstack-debian-image \
 	--release stretch \
 	--extra-packages acl,cloud-initramfs-growroot,default-jre-headless,git,gnupg,krb5-user,librarian-puppet,qemu-guest-agent,puppet \
-	--image-size 4 \
+	--image-size 4.5 \
 	--hook-script ./hadoop.sh 2>&1 | tee build-image.log