diff --git a/inventory/group_vars/buildvm-stg b/inventory/group_vars/buildvm-stg
index ec1882f221..21fbf37fcd 100644
--- a/inventory/group_vars/buildvm-stg
+++ b/inventory/group_vars/buildvm-stg
@@ -16,7 +16,7 @@ host_group: kojibuilder
 fas_client_groups: sysadmin-releng
 sudoers: "{{ private }}/files/sudo/00releng-sudoers"
 datacenter: staging
-nfs_mount_opts: "rw,hard,bg,intr,noatime,nodev,nosuid"
+nfs_mount_opts: "rw,hard,bg,intr,noatime,nodev,nosuid,nfsvers=4"
 
 koji_hub_nfs: "fedora_koji"
 koji_server_url: "http://koji.stg.fedoraproject.org/kojihub"
diff --git a/inventory/group_vars/releng-secondary b/inventory/group_vars/releng-secondary
index 1ab23edd70..6beb567317 100644
--- a/inventory/group_vars/releng-secondary
+++ b/inventory/group_vars/releng-secondary
@@ -11,7 +11,7 @@ dns: 10.5.126.21
 nrpe_procs_warn: 900
 nrpe_procs_crit: 1000
 
-nfs_mount_opts: "rw,hard,bg,intr,noatime,nodev,nosuid,nfsvers=3,rsize=32768,wsize=32768"
+nfs_mount_opts: "rw,hard,bg,intr,noatime,nodev,nosuid,nfsvers=4"
 
 fas_client_groups: sysadmin-noc,sysadmin-releng
 sudoers: "{{ private }}/files/sudo/00releng-sudoers"