diff --git a/openstack-proxy/nodeimage.pkr.hcl b/openstack-proxy/nodeimage.pkr.hcl
index 18c195e572b279d743be8d062e50c5550e96fadf..d20c2c779044e203832de5d81948fc0c11cf1632 100644
--- a/openstack-proxy/nodeimage.pkr.hcl
+++ b/openstack-proxy/nodeimage.pkr.hcl
@@ -38,8 +38,8 @@ build {
 
   provisioner "shell" {
     inline = [
-      "sed -i 's/^mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*",
-      "sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*"
+      "sudo sed -i 's/^mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*",
+      "sudo sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*"
     ]
   }