diff --git a/instances/cyborg.rb b/instances/cyborg.rb
index c8031dd..abfa163 100644
--- a/instances/cyborg.rb
+++ b/instances/cyborg.rb
@@ -5,6 +5,7 @@ def instance(vconfig, custom)
     cyborg.vm.guest = :debian
 
     cyborg.vm.box = 'Sliim/cyborg-essentials'
+    cyborg.vm.box_check_update = false
     cyborg.vm.box_download_checksum_type = 'sha256'
     cyborg.vm.box_download_checksum = 'd15384c2e10b8ede2893b045399e959f'\
                                       '87fbf5ed8b152c7fd9f6bbc84fa8e33f'
diff --git a/instances/database.rb b/instances/database.rb
index 69994ec..18f4a48 100644
--- a/instances/database.rb
+++ b/instances/database.rb
@@ -14,6 +14,7 @@ def instance(vconfig, custom)
 
   vconfig.vm.define custom['name'], primary: false, autostart: false do |database|
     database.vm.box = 'debian/contrib-jessie64'
+    database.vm.box_check_update = false
 
     database.vm.provider 'virtualbox' do |v|
       v.gui = false
diff --git a/instances/kali-e17.rb b/instances/kali-e17.rb
index 7254623..31b75e2 100644
--- a/instances/kali-e17.rb
+++ b/instances/kali-e17.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-e17-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = '0466384e8338e269b441b5f2872c2888'\
                                     '8528d244a0d31b73c7fb9d15d4f1bd0d'
diff --git a/instances/kali-kde.rb b/instances/kali-kde.rb
index 983f130..2a0d342 100644
--- a/instances/kali-kde.rb
+++ b/instances/kali-kde.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-kde-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = '0f44327c2606ead670679254f27945c8'\
                                     '2eb7cc2966c4a4f1d3137160dad07fe3'
diff --git a/instances/kali-light.rb b/instances/kali-light.rb
index b50e991..d8a5a37 100644
--- a/instances/kali-light.rb
+++ b/instances/kali-light.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-light-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = '1f58f62417219ce8fe7d5f0b72dc3a8e'\
                                     '0c13c019e7f485e10d27a0f1f096e266'
diff --git a/instances/kali-lxde.rb b/instances/kali-lxde.rb
index 031c8eb..bd494cb 100644
--- a/instances/kali-lxde.rb
+++ b/instances/kali-lxde.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-lxde-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = 'f3765b918aec03024c2657fc75090c54'\
                                     '0d95602cd90c0ab8835b4c0a0f1da23a'
diff --git a/instances/kali-mate.rb b/instances/kali-mate.rb
index 8deb8e3..e1503aa 100644
--- a/instances/kali-mate.rb
+++ b/instances/kali-mate.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-mate-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = '221f1bf6936b560d8980290c2af0702f'\
                                     '1e705798eb4ef51acc144e36c89fe51c'
diff --git a/instances/kali-xfce.rb b/instances/kali-xfce.rb
index 760b354..2ad2a8d 100644
--- a/instances/kali-xfce.rb
+++ b/instances/kali-xfce.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-xfce-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = 'eec6b371743467244d3f4f1032c9dc57'\
                                     '6a1ce482a32ad18b8605bd3013e142a0'
diff --git a/instances/kali.rb b/instances/kali.rb
index a0fd27f..0442ed5 100644
--- a/instances/kali.rb
+++ b/instances/kali.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.username = 'root'
 
     kali.vm.box = 'Sliim/kali-2018.1-amd64'
+    kali.vm.box_check_update = false
     kali.vm.box_download_checksum_type = 'sha256'
     kali.vm.box_download_checksum = '407b01c550e1f230fc238d12d91da899'\
                                     '644bec2cac76a1202d7bab2f9d6cbefd'
diff --git a/instances/os-kali-light.rb b/instances/os-kali-light.rb
index f1e427f..0b6f939 100644
--- a/instances/os-kali-light.rb
+++ b/instances/os-kali-light.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.password = 'vagrant'
 
     kali.vm.box = 'offensive-security/kali-linux-light'
+    kali.vm.box_check_update = false
     kali.vm.guest = :debian
 
     kali.vm.synced_folder '.', '/vagrant', disabled: true
diff --git a/instances/os-kali.rb b/instances/os-kali.rb
index 18f2619..3a572ce 100644
--- a/instances/os-kali.rb
+++ b/instances/os-kali.rb
@@ -4,6 +4,7 @@ def instance(vconfig, custom)
     kali.ssh.password = 'vagrant'
 
     kali.vm.box = 'offensive-security/kali-linux'
+    kali.vm.box_check_update = false
     kali.vm.guest = :debian
 
     kali.vm.synced_folder '.', '/vagrant', disabled: true
diff --git a/instances/ph20-blackarch-common.rb b/instances/ph20-blackarch-common.rb
index 0fce051..c7fc015 100644
--- a/instances/ph20-blackarch-common.rb
+++ b/instances/ph20-blackarch-common.rb
@@ -1,6 +1,7 @@
 def instance(vconfig, custom)
   vconfig.vm.define custom['name'], primary: false do |blackarch|
     blackarch.vm.box = 'ph20/blackarch-common-x86_64'
+    blackarch.vm.box_check_update = false
 
     blackarch.vm.synced_folder '.', '/vagrant', disabled: true
 
diff --git a/instances/ph20-blackarch-core.rb b/instances/ph20-blackarch-core.rb
index 49bfffe..79cc1a7 100644
--- a/instances/ph20-blackarch-core.rb
+++ b/instances/ph20-blackarch-core.rb
@@ -1,6 +1,7 @@
 def instance(vconfig, custom)
   vconfig.vm.define custom['name'], primary: false do |blackarch|
     blackarch.vm.box = 'ph20/blackarch-core-x86_64'
+    blackarch.vm.box_check_update = false
 
     blackarch.vm.synced_folder '.', '/vagrant', disabled: true
 
diff --git a/instances/ph20-blackarch-full.rb b/instances/ph20-blackarch-full.rb
index e0f9662..3044d29 100644
--- a/instances/ph20-blackarch-full.rb
+++ b/instances/ph20-blackarch-full.rb
@@ -1,6 +1,7 @@
 def instance(vconfig, custom)
   vconfig.vm.define custom['name'], primary: false do |blackarch|
     blackarch.vm.box = 'ph20/blackarch-full-x86_64'
+    blackarch.vm.box_check_update = false
 
     blackarch.vm.synced_folder '.', '/vagrant', disabled: true
 
diff --git a/instances/teamserver.rb b/instances/teamserver.rb
index 8f4f392..1281082 100644
--- a/instances/teamserver.rb
+++ b/instances/teamserver.rb
@@ -29,6 +29,7 @@ def instance(vconfig, custom)
     teamserver.ssh.username = 'root'
 
     teamserver.vm.box = 'Sliim/kali-2016.2-light-amd64'
+    teamserver.vm.box_check_update = false
     teamserver.vm.box_download_checksum_type = 'sha256'
     teamserver.vm.box_download_checksum = '5d455bf1cf8d7b2b4f3be7c4b3cc4315'\
                                           '2ae5cfe09eaf4aaf30ac112aa6bd3b40'
diff --git a/targets/IMF.rb b/targets/IMF.rb
index 48072df..12a3af1 100644
--- a/targets/IMF.rb
+++ b/targets/IMF.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-imf'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '402923677aac7c7060db32fcacf1a8e2'\
                                       '609d0a85c088c5b584369364e04cfa2b'
diff --git a/targets/analougepond.rb b/targets/analougepond.rb
index 121b711..a970043 100644
--- a/targets/analougepond.rb
+++ b/targets/analougepond.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-analougepond'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '35c0eb7e2fcb57d4c017251c8de8bd1c'\
                                       '905295be60e76f56da60c23feed1f92a'
diff --git a/targets/born2root.rb b/targets/born2root.rb
index 926815f..2078faa 100644
--- a/targets/born2root.rb
+++ b/targets/born2root.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-born2root'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'd4971528897b8c9d0012b7e1adae0acd'\
                                       '6f64d5f8c153575a97a7fac628711beb'
diff --git a/targets/bricks.rb b/targets/bricks.rb
index 5227f70..c5e01e1 100644
--- a/targets/bricks.rb
+++ b/targets/bricks.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'bento/ubuntu-14.04'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
diff --git a/targets/bulldog.rb b/targets/bulldog.rb
index 3e4c8ca..04ac5ac 100644
--- a/targets/bulldog.rb
+++ b/targets/bulldog.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-bulldog'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'a59b3a5d7672ad7c5aec39a11b696d7d'\
                                       '670f3851471ed02de6b01e83a5b09860'
diff --git a/targets/covfefe.rb b/targets/covfefe.rb
index 89de179..8eeb0cc 100644
--- a/targets/covfefe.rb
+++ b/targets/covfefe.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-covfefe'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '6b534f62ef31b575df56bf90ea0327e4'\
                                       '69e6284183789136b21dcbef776a04da'
diff --git a/targets/csharp-vuln-json.rb b/targets/csharp-vuln-json.rb
index 9ec3679..c67dc24 100644
--- a/targets/csharp-vuln-json.rb
+++ b/targets/csharp-vuln-json.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-csharp-vuln-json'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'ad4a8b6b2cbbcc59ad96819a9551c4ed'\
                                       '8ed52709b758fd1d7bb49ae9fa6a86f0'
diff --git a/targets/csharp-vuln-soap.rb b/targets/csharp-vuln-soap.rb
index 1187cc8..169e0d4 100644
--- a/targets/csharp-vuln-soap.rb
+++ b/targets/csharp-vuln-soap.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-csharp-vuln-soap'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'dbf8cbedabe4dd82056c64bb6c41608b'\
                                       'f4c959aeab04a8739e18e979192d70cb'
diff --git a/targets/dc416-baffle.rb b/targets/dc416-baffle.rb
index df60a62..12ea145 100644
--- a/targets/dc416-baffle.rb
+++ b/targets/dc416-baffle.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-dc416-baffle'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '2579f2298685a39be3ffffc21323b87f'\
                                       '23dcd7ec057f2bb3f0900f682cbd3b53'
diff --git a/targets/dc416-basement.rb b/targets/dc416-basement.rb
index 51c5f26..15ff621 100644
--- a/targets/dc416-basement.rb
+++ b/targets/dc416-basement.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-dc416-basement'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '693a6db896f00fa701d933c3798737e6'\
                                       '56db24e9dac1de51f09f739e97c235cc'
diff --git a/targets/dc416-dick-dastardly.rb b/targets/dc416-dick-dastardly.rb
index 02fd4be..06b2d3c 100644
--- a/targets/dc416-dick-dastardly.rb
+++ b/targets/dc416-dick-dastardly.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-dc416-dick-dastardly'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'e57eb5d3117a39aed0bfeacc1bf6e863'\
                                       'd2e1b2b95a76884e7d2a72d650602d18'
diff --git a/targets/debian-9.0.rb b/targets/debian-9.0.rb
index 6cc41b9..42c4d5f 100644
--- a/targets/debian-9.0.rb
+++ b/targets/debian-9.0.rb
@@ -1,6 +1,8 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'bento/debian-9.0'
+    target.vm.box_check_update = false
+
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
       v.customize ['modifyvm', :id, '--memory', 512]
diff --git a/targets/defence-space-ctf.rb b/targets/defence-space-ctf.rb
index d84ada4..c3666f4 100644
--- a/targets/defence-space-ctf.rb
+++ b/targets/defence-space-ctf.rb
@@ -4,6 +4,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-defence-space-ctf'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'dcf25110a3fe602c608b251b7d716295'\
                                       'f0f1ac898c5a6e9b9d991ba54c7566cd'
diff --git a/targets/docker-host.rb b/targets/docker-host.rb
index a8d1bc6..9daa9e9 100644
--- a/targets/docker-host.rb
+++ b/targets/docker-host.rb
@@ -1,6 +1,7 @@
 def target(vconfig, _custom)
   vconfig.vm.define 'docker-host', autostart: false do |target|
     target.vm.box = 'debian/contrib-jessie64'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = false
diff --git a/targets/dvwa.rb b/targets/dvwa.rb
index bc3b75e..22fa69d 100644
--- a/targets/dvwa.rb
+++ b/targets/dvwa.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'bento/ubuntu-14.04'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
diff --git a/targets/fart-knocker.rb b/targets/fart-knocker.rb
index b753b11..0886f55 100644
--- a/targets/fart-knocker.rb
+++ b/targets/fart-knocker.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-fart-knocker'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '1a04bce9c0d03dfb3d96f53fd3dc0362'\
                                       '26ee5554fb014c1a93aab5fbf3402bf8'
diff --git a/targets/gibson.rb b/targets/gibson.rb
index 88dc767..65a5779 100644
--- a/targets/gibson.rb
+++ b/targets/gibson.rb
@@ -4,6 +4,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-gibson'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '7c2a9f803d9d07bb21e7b470b0bc28a4'\
                                       '43763482aabf07849604c5eaf54ef0d3'
diff --git a/targets/gruyere.rb b/targets/gruyere.rb
index 7979f43..5a2e524 100644
--- a/targets/gruyere.rb
+++ b/targets/gruyere.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'ubuntu/trusty32'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
diff --git a/targets/hackday-albania.rb b/targets/hackday-albania.rb
index 7ae8f3f..f59b4bd 100644
--- a/targets/hackday-albania.rb
+++ b/targets/hackday-albania.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-hackday-albania'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '17c3e4f049a50288c581752631ccffa5'\
                                       'caaae3a2059afb585f7f793268aed8ac'
diff --git a/targets/hackfest2016-orcus.rb b/targets/hackfest2016-orcus.rb
index 5d5a59d..852c970 100644
--- a/targets/hackfest2016-orcus.rb
+++ b/targets/hackfest2016-orcus.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-hackfest2016-orcus'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'fd8b2324ccd41e4d9da5e51421cde004'\
                                       'c47b91573e2764aa20dc24db87996ca1'
diff --git a/targets/hackfest2016-quaoar.rb b/targets/hackfest2016-quaoar.rb
index 6e6ccf1..c165149 100644
--- a/targets/hackfest2016-quaoar.rb
+++ b/targets/hackfest2016-quaoar.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-hackfest2016-quaoar'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '855bcc5db53d0cddf03080ff607adb1a'\
                                       '01addea3833ac68163a0dc46226c5677'
diff --git a/targets/hackfest2016-sedna.rb b/targets/hackfest2016-sedna.rb
index 4a45644..de72c77 100644
--- a/targets/hackfest2016-sedna.rb
+++ b/targets/hackfest2016-sedna.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-hackfest2016-sedna'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '97488f04f5038a9d5411cbcdc82f79eb'\
                                       '2d676d3b3387d8e4195894ac41dc96b0'
diff --git a/targets/hell.rb b/targets/hell.rb
index 0231bd3..adf2fa8 100644
--- a/targets/hell.rb
+++ b/targets/hell.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-hell'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '8df8b5dd8aec21666a508101fa94d931'\
                                       '5c2e806a6bcbc0b9f5e5a4bc2bd2a8af'
diff --git a/targets/kevgir.rb b/targets/kevgir.rb
index 34a8639..b677e9b 100644
--- a/targets/kevgir.rb
+++ b/targets/kevgir.rb
@@ -4,6 +4,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-kevgir'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'e67714c11e7c9db7ca4427baf08746e8'\
                                       '7fecfb92b635af174a3f666c39b53111'
diff --git a/targets/metasploitable2.rb b/targets/metasploitable2.rb
index 61647a8..e40730c 100644
--- a/targets/metasploitable2.rb
+++ b/targets/metasploitable2.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/metasploitable2'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '3112d99b89a322c77d8f76f8c42ba55f'\
                                       '420db405757387b4730a487dc9934141'
diff --git a/targets/metasploitable3-trusty.rb b/targets/metasploitable3-trusty.rb
index d981cd9..b3c5a9b 100644
--- a/targets/metasploitable3-trusty.rb
+++ b/targets/metasploitable3-trusty.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/metasploitable3-trusty'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'ed3bb5bfa1fef2b585a1748afa03ebf7'\
                                       '2f7a1dad876d012ff42759b49447aea4'
diff --git a/targets/metasploitable3-win2008r2.rb b/targets/metasploitable3-win2008r2.rb
index 89bf1bb..25729fe 100644
--- a/targets/metasploitable3-win2008r2.rb
+++ b/targets/metasploitable3-win2008r2.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/metasploitable3-win2008r2'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'cae95fdba710d1c1e68539d9bb9acb07'\
                                       '9b6935625bfba929b9de862155d07498'
diff --git a/targets/mmmctf.rb b/targets/mmmctf.rb
index 115d3f7..9b763f8 100644
--- a/targets/mmmctf.rb
+++ b/targets/mmmctf.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-mmmctf'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '7a0b3cb14a21c71ba90ad85005f76d8c'\
                                       '46117e3c2ed4409789c00d2d77f3b314'
diff --git a/targets/mrrobot.rb b/targets/mrrobot.rb
index 968dbac..2d4f8c1 100644
--- a/targets/mrrobot.rb
+++ b/targets/mrrobot.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-mrrobot'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'be655cc47644b03880e8739f66fabf16'\
                                       '5ac171682bd11c0bb5f56030142fad89'
diff --git a/targets/owlnest.rb b/targets/owlnest.rb
index c6e8be6..6f71b44 100644
--- a/targets/owlnest.rb
+++ b/targets/owlnest.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-owlnest'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '6fb96d7a030d9e8c8fc750892f959b4b'\
                                       'b68d827eb8305937932cf4b0efd50bca'
diff --git a/targets/pipe.rb b/targets/pipe.rb
index dd2458e..6c53f24 100644
--- a/targets/pipe.rb
+++ b/targets/pipe.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-pipe'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'c350368320ce835c11cc2c35ba1c9287'\
                                       '5aecddfff02a1e9b1296487530ffe9d7'
diff --git a/targets/primer.rb b/targets/primer.rb
index 54dd5c3..2ae7471 100644
--- a/targets/primer.rb
+++ b/targets/primer.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-primer'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '342bb82ebce63a819575ba2f2b7a4a2d'\
                                       '4fa53c70bd377076cdffbf9b3a0788f4'
diff --git a/targets/pwnlab-init.rb b/targets/pwnlab-init.rb
index 51479ea..6e0b3e3 100644
--- a/targets/pwnlab-init.rb
+++ b/targets/pwnlab-init.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-pwnlab-init'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'c23fe5c0edb36b14ed15d8ab5ad014d5'\
                                       'bda4abef0cc5ed8de770164bbf963081'
diff --git a/targets/rapid7-metasploitable3-ub1404.rb b/targets/rapid7-metasploitable3-ub1404.rb
index fa0fdcf..8d5edc6 100644
--- a/targets/rapid7-metasploitable3-ub1404.rb
+++ b/targets/rapid7-metasploitable3-ub1404.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'rapid7/metasploitable3-ub1404'
+    target.vm.box_check_update = false
     target.vm.hostname = 'metasploitable3-ub1404'
     target.ssh.username = 'vagrant'
     target.ssh.password = 'vagrant'
diff --git a/targets/rapid7-metasploitable3-win2k8.rb b/targets/rapid7-metasploitable3-win2k8.rb
index ddb8fc3..e0069bd 100644
--- a/targets/rapid7-metasploitable3-win2k8.rb
+++ b/targets/rapid7-metasploitable3-win2k8.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'rapid7/metasploitable3-win2k8'
+    target.vm.box_check_update = false
     target.vm.hostname = 'metasploitable3-win2k8'
     target.vm.communicator = 'winrm'
     target.winrm.retry_limit = 60
diff --git a/targets/rop-primer.rb b/targets/rop-primer.rb
index 3ae59e4..fade38e 100644
--- a/targets/rop-primer.rb
+++ b/targets/rop-primer.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-rop-primer'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '62e7d66eb94fa20e69acc9bc4c9828ec'\
                                       '195d3f14e173a268e38f342efc84470c'
diff --git a/targets/sidney.rb b/targets/sidney.rb
index b4b3724..d285f43 100644
--- a/targets/sidney.rb
+++ b/targets/sidney.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-sidney'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'bdb99ef6307c4b6b8d63a1b72a59c1fe'\
                                       '33ef3865739aef6023951973e2cdd2d2'
diff --git a/targets/simple.rb b/targets/simple.rb
index 8e649dd..f1c5da0 100644
--- a/targets/simple.rb
+++ b/targets/simple.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-simple'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'f258dd630adca903fc2368aea7ddcde7'\
                                       '5819641402a0712a0090270d8ee21027'
diff --git a/targets/skydog-ctf.rb b/targets/skydog-ctf.rb
index 333fd32..cbe10c5 100644
--- a/targets/skydog-ctf.rb
+++ b/targets/skydog-ctf.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-skydog-ctf'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '4985ccc2fe664ee3058a1881f6a642d2'\
                                       '20ce46ae5d84601273908eea8ef7bf2d'
diff --git a/targets/skydogcon-ctf-2016.rb b/targets/skydogcon-ctf-2016.rb
index 43d44bd..d1acc6a 100644
--- a/targets/skydogcon-ctf-2016.rb
+++ b/targets/skydogcon-ctf-2016.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-skydogcon-ctf-2016'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'e3312e03d535b40a59500a0c7f56791a'\
                                       'f6f88e71c4de47534b7cd7444c154d2a'
diff --git a/targets/teuchter.rb b/targets/teuchter.rb
index 11c417b..0ff9378 100644
--- a/targets/teuchter.rb
+++ b/targets/teuchter.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-teuchter'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'e6fcf2ce0250e7c75c2d015ae55e0e30'\
                                       'c2562093bed85912c4e13c7e5e20d3c5'
diff --git a/targets/the-net.rb b/targets/the-net.rb
index f7503b1..ead93dc 100644
--- a/targets/the-net.rb
+++ b/targets/the-net.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-the-net'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'db03f5867a6733405b3737fbfdb688f7'\
                                       'c17702dc50c79796dd93a838cce419bd'
diff --git a/targets/tommy-boy.rb b/targets/tommy-boy.rb
index 3929fd1..f4e6adf 100644
--- a/targets/tommy-boy.rb
+++ b/targets/tommy-boy.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-tommy-boy'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '603f9e5fe1c164d04b69ff3a3c7936eb'\
                                       '5c198f29f4f7a5f139bd62a69f1609f7'
diff --git a/targets/ubuntu-14.04.rb b/targets/ubuntu-14.04.rb
index 721c75c..5d46665 100644
--- a/targets/ubuntu-14.04.rb
+++ b/targets/ubuntu-14.04.rb
@@ -1,6 +1,8 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'bento/ubuntu-14.04'
+    target.vm.box_check_update = false
+
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
       v.customize ['modifyvm', :id, '--memory', 512]
diff --git a/targets/vicnum.rb b/targets/vicnum.rb
index 17245a7..caf23a3 100644
--- a/targets/vicnum.rb
+++ b/targets/vicnum.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'bento/ubuntu-14.04'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
diff --git a/targets/violator.rb b/targets/violator.rb
index 6edc3f6..f6f8a17 100644
--- a/targets/violator.rb
+++ b/targets/violator.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-violator'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '9765e3216029e45c4410e9dca545472c'\
                                       '3d23cbbb85eff412399372ae35eb8036'
diff --git a/targets/vistaie7.rb b/targets/vistaie7.rb
index 00c246f..f261788 100644
--- a/targets/vistaie7.rb
+++ b/targets/vistaie7.rb
@@ -5,6 +5,7 @@ def target(vconfig, custom)
     target.vm.communicator = 'winrm'
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'vista-ie7'
+    target.vm.box_check_update = false
     target.vm.box_url = 'http://aka.ms/vagrant-vista-ie7'
 
     target.vm.provider 'virtualbox' do |v|
diff --git a/targets/web-sec-dojo.rb b/targets/web-sec-dojo.rb
index 31a2388..2bc86d4 100644
--- a/targets/web-sec-dojo.rb
+++ b/targets/web-sec-dojo.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-web-security-dojo'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = 'a8bf7c87c9a5797518d4bb36255d7b93'\
                                       'dd9d7eb92e88f851f86e400f142236eb'
diff --git a/targets/webgoat.rb b/targets/webgoat.rb
index 759bd45..eef7d48 100644
--- a/targets/webgoat.rb
+++ b/targets/webgoat.rb
@@ -1,6 +1,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'ubuntu/trusty32'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.customize ['modifyvm', :id, '--name', "pentest-env-#{custom['name']}"]
diff --git a/targets/win2008ent.rb b/targets/win2008ent.rb
index 1b8a5cd..d58a5ea 100644
--- a/targets/win2008ent.rb
+++ b/targets/win2008ent.rb
@@ -5,6 +5,7 @@ def target(vconfig, custom)
     target.vm.communicator = :winrm
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'opentable/win-2008-enterprise-i386-nocm'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win2008web.rb b/targets/win2008web.rb
index 25a51f0..d126468 100644
--- a/targets/win2008web.rb
+++ b/targets/win2008web.rb
@@ -5,6 +5,7 @@ def target(vconfig, custom)
     target.vm.communicator = :winrm
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'opentable/win-2008r2-web-amd64-nocm'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win2012dc.rb b/targets/win2012dc.rb
index 61ad44a..739044e 100644
--- a/targets/win2012dc.rb
+++ b/targets/win2012dc.rb
@@ -5,6 +5,7 @@ def target(vconfig, custom)
     target.vm.communicator = :winrm
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'opentable/win-2012r2-datacenter-amd64-nocm'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win2012std.rb b/targets/win2012std.rb
index ce2c915..e0c5a65 100644
--- a/targets/win2012std.rb
+++ b/targets/win2012std.rb
@@ -5,6 +5,7 @@ def target(vconfig, custom)
     target.vm.communicator = :winrm
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'opentable/win-2012r2-standard-amd64-nocm'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win7ie8.rb b/targets/win7ie8.rb
index cccf85e..7bcd5bc 100644
--- a/targets/win7ie8.rb
+++ b/targets/win7ie8.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'win7-ie8'
     target.vm.box_url = 'http://aka.ms/vagrant-win7-ie8'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win7ie9.rb b/targets/win7ie9.rb
index 865ba71..8f3d73a 100644
--- a/targets/win7ie9.rb
+++ b/targets/win7ie9.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'win7-ie9'
     target.vm.box_url = 'http://aka.ms/vagrant-win7-ie9'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win81ie11.rb b/targets/win81ie11.rb
index ddb4560..c65a931 100644
--- a/targets/win81ie11.rb
+++ b/targets/win81ie11.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'win81-ie11'
     target.vm.box_url = 'http://aka.ms/vagrant-win8-ie10'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/win8ie10.rb b/targets/win8ie10.rb
index 34a664e..f9a2c81 100644
--- a/targets/win8ie10.rb
+++ b/targets/win8ie10.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'win8-ie10'
     target.vm.box_url = 'http://aka.ms/vagrant-win8-ie10'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/winxpie6.rb b/targets/winxpie6.rb
index 541df84..e92ae75 100644
--- a/targets/winxpie6.rb
+++ b/targets/winxpie6.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'xp-ie6'
     target.vm.box_url = 'http://aka.ms/vagrant-xp-ie6'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/winxpie8.rb b/targets/winxpie8.rb
index d1fa5b8..4885004 100644
--- a/targets/winxpie8.rb
+++ b/targets/winxpie8.rb
@@ -6,6 +6,7 @@ def target(vconfig, custom)
     target.vm.synced_folder '.', '/vagrant', disabled: true
     target.vm.box = 'xp-ie8'
     target.vm.box_url = 'http://aka.ms/vagrant-xp-ie8'
+    target.vm.box_check_update = false
 
     target.vm.provider 'virtualbox' do |v|
       v.gui = true
diff --git a/targets/zico2.rb b/targets/zico2.rb
index db13204..a6a9930 100644
--- a/targets/zico2.rb
+++ b/targets/zico2.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-zico2'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '52b05ddbbc9388f873c842e6a284dfb6'\
                                       '24692bc8ed88e056c109493cc923ab01'
diff --git a/targets/zorz.rb b/targets/zorz.rb
index 4d58c3e..d2675b9 100644
--- a/targets/zorz.rb
+++ b/targets/zorz.rb
@@ -3,6 +3,7 @@
 def target(vconfig, custom)
   vconfig.vm.define custom['name'], autostart: false do |target|
     target.vm.box = 'Sliim/vulnhub-zorz'
+    target.vm.box_check_update = false
     target.vm.box_download_checksum_type = 'sha256'
     target.vm.box_download_checksum = '9e4980628b9411bb0a007d4275298872'\
                                       '8076f0846184ce8377bd285f20017219'