diff --git a/README.md b/README.md
index 2798e25..6dd58f0 100644
--- a/README.md
+++ b/README.md
@@ -26,15 +26,16 @@ Automagically install Docker in a VirtualBox VM with super-fast NFS mounts.
 2. Run the installer
   ```bash
   # Install with default settings
-  # (4096MB RAM, 50GB data disk, automatic shell integration, VM IP: 192.168.42.2)
+  # (4096MB RAM, 50GB data disk, automatic shell integration, VM IP: 192.168.42.2, NFS mount opts: noacl,nolock,async,noatime,actimeo=1)
   ./install.sh
 
   # Or run the installer with custom settings
-  # ./install.sh [VM memory in MB] [data disk size in GB] [shell integration] [VM IP subnet]
+  # ./install.sh [VM memory in MB] [data disk size in GB] [shell integration] [VM IP subnet] [NFS mount options]
   ./install.sh 2048
   ./install.sh 2048 30
   ./install.sh 2048 30 manual
-  ./install.sh 2048 30 manual 192.168.142
+  ./install.sh 2048 30 manual 192.168.142  
+  ./install.sh 2048 30 manual 192.168.142 'acl,nolock,async,noatime,actimeo=1'
   ```
 
 - Shell integration can be either `auto` (default) or `manual`.
diff --git a/install.sh b/install.sh
index 033d67e..3ae26c8 100755
--- a/install.sh
+++ b/install.sh
@@ -7,6 +7,7 @@ RAM="${1:-4096}"
 DISKSIZE="${2:-50}"
 SHELL_INTEGRATION="${3:-auto}"
 SUBNET="${4:-192.168.42}"
+NFS_MOUNT_OPTS="${5:-noacl,nolock,async,noatime,actimeo=1}"
 
 HOST_IP="${SUBNET}.1" # when given a 192.168.x.y IP, vagrant assigns 192.168.x.1 to the host
 VM_IP="${SUBNET}.2"
@@ -86,7 +87,7 @@ Vagrant.configure('2') do |config|
     end
 
   config.vm.synced_folder '.', '/vagrant', disabled: true
-  config.vm.provision :shell, path: 'provision_vm.sh', args: ['${HOST_IP}', '${HOME}', '${NFS_HOME}']
+  config.vm.provision :shell, path: 'provision_vm.sh', args: ['${HOST_IP}', '${HOME}', '${NFS_HOME}', '${NFS_MOUNT_OPTS}']
   config.vm.network :private_network, ip: '${VM_IP}'
 end
 EOD
diff --git a/provision_vm.sh b/provision_vm.sh
index 202b7b6..140981e 100644
--- a/provision_vm.sh
+++ b/provision_vm.sh
@@ -10,6 +10,7 @@ fi
 HOST_IP="$1"
 HOST_HOME="$2"
 HOST_NFS_HOME="$3"
+NFS_MOUNT_OPTS="$4"
 
 if [ -d /etc/docker ]; then
   echo "Provisioning is not idempotent, please re-install mobymac if needed."
@@ -62,5 +63,5 @@ grub-install /dev/sda
 
 echo "=== Setting up NFS mount"
 mkdir -p "${HOST_HOME}"
-echo "${HOST_IP}:${HOST_NFS_HOME} ${HOST_HOME} nfs noacl,nolock,async,noatime,actimeo=1 0 0" >> /etc/fstab
+echo "${HOST_IP}:${HOST_NFS_HOME} ${HOST_HOME} nfs ${NFS_MOUNT_OPTS} 0 0" >> /etc/fstab
 mount "${HOST_HOME}"