diff --git a/Anka.md b/Anka.md
index 8ab9d58..d6f3638 100644
--- a/Anka.md
+++ b/Anka.md
@@ -4,7 +4,7 @@ First, download macOS from App Store to have a `*.app` installation in `/Applica
 base all other VMs from:
 
 ```bash
-anka create --ram-size 8G --cpu-count 2 --disk-size 80G -a /Applications/Install\ macOS\ Big\ Sur.app big-sur-vanilla
+anka create --ram-size 8G --cpu-count 2 --disk-size 80G -a /Applications/Install\ macOS\ Big\ Sur.app monterey-vanilla
 ```
 
 Then run `./scripts/install-anka-builder.sh` to install Anka builder for Packer.
@@ -18,7 +18,7 @@ packer build -only=anka templates/base.json
 We also need to add a port forwarding rule so VMs based of `catalina-base` image can be SSHable:
 
 ```bash
-anka modify big-sur-base add port-forwarding --host-port 0 --guest-port 22 ssh
+anka modify monterey-base add port-forwarding --host-port 0 --guest-port 22 ssh
 ```
 
 ## Building Xcode Images
diff --git a/Parallels.md b/Parallels.md
index 9f93f25..484a8c7 100644
--- a/Parallels.md
+++ b/Parallels.md
@@ -1,6 +1,6 @@
 ## Building Vanilla Image
 
-First, start Parallels 16 for Desktop and create a `big-sur-vanilla` VM by just creating it from a recovery partition in the UI.
+First, start Parallels 17 for Desktop and create a `monterey-vanilla` VM by just creating it from a recovery partition in the UI.
 
 Use VM's UI to change some settings:
 
@@ -25,10 +25,10 @@ Also change some VM settings:
 packer build -only=parallels templates/base.json
 ```
 
-If you are getting `prlctl error: Failed to register the VM: "big-sur-vanilla" is already registered.` error, run:
+If you are getting `prlctl error: Failed to register the VM: "monterey-vanilla" is already registered.` error, run:
 
 ```bash
-prlctl unregister big-sur-vanilla
+prlctl unregister monterey-vanilla
 ```
 
 ## Building Xcode Images
diff --git a/README.md b/README.md
index af88fa5..9daf229 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ Repository with Packer templates to build VMs to use with [Cirrus CI](https://ci
 * `catalina-xcode-N` image is based of `catalina-base` and has `Xcode N` with [`Flutter`](https://flutter.dev/) pre-installed
 * `big-sur-base` image has only `brew` pre-installed
 * `big-sur-xcode-N` image is based of `big-sur-base` and has `Xcode N` with [`Flutter`](https://flutter.dev/) pre-installed
+* `monterey-base` image has only `brew` pre-installed
+* `monterey-xcode-N` image is based of `monterey-base` and has `Xcode N` with [`Flutter`](https://flutter.dev/) pre-installed
 
 See a full list of VMs available on Cirrus CI [here](https://cirrus-ci.org/guide/macOS/#list-of-available-images).
 
@@ -13,4 +15,4 @@ See a full list of VMs available on Cirrus CI [here](https://cirrus-ci.org/guide
 
 ## Anka
 
-Please see [`Anka.md`](Anka.md) for details on how to build Anka VMs.
\ No newline at end of file
+Please see [`Anka.md`](Anka.md) for details on how to build Anka VMs.
diff --git a/scripts/pack-all-xcode-images.sh b/scripts/pack-all-xcode-images.sh
index 593dc9d..49424ef 100755
--- a/scripts/pack-all-xcode-images.sh
+++ b/scripts/pack-all-xcode-images.sh
@@ -5,12 +5,12 @@ set -e
 Xcodes=("12.4")
 
 for Xcode in ${Xcodes[@]}; do
-  mv "$HOME/Parallels/big-sur-xcode-$Xcode/big-sur-xcode-$Xcode.pvm" "$HOME/Parallels/big-sur-xcode-$Xcode.pvm"
-  rm -rf "$HOME/Parallels/big-sur-xcode-$Xcode"
-  prlctl register "$HOME/Parallels/big-sur-xcode-$Xcode.pvm"
-  prlctl set "big-sur-xcode-$Xcode (1)" --name "big-sur-xcode-$Xcode" || true
-  prlctl start "big-sur-xcode-$Xcode"
+  mv "$HOME/Parallels/monterey-xcode-$Xcode/monterey-xcode-$Xcode.pvm" "$HOME/Parallels/monterey-xcode-$Xcode.pvm"
+  rm -rf "$HOME/Parallels/monterey-xcode-$Xcode"
+  prlctl register "$HOME/Parallels/monterey-xcode-$Xcode.pvm"
+  prlctl set "monterey-xcode-$Xcode (1)" --name "monterey-xcode-$Xcode" || true
+  prlctl start "monterey-xcode-$Xcode"
   sleep 180
-  prlctl suspend "big-sur-xcode-$Xcode"
-  time prlctl pack "big-sur-xcode-$Xcode"
-done
\ No newline at end of file
+  prlctl suspend "monterey-xcode-$Xcode"
+  time prlctl pack "monterey-xcode-$Xcode"
+done
diff --git a/templates/base.json b/templates/base.json
index 97ab03b..9f379cf 100644
--- a/templates/base.json
+++ b/templates/base.json
@@ -1,7 +1,7 @@
 {
   "variables": {
     "home": "{{env `HOME`}}",
-    "mac_os_version": "big-sur"
+    "mac_os_version": "monterey"
   },
   "builders": [
     {
diff --git a/templates/xcode.json b/templates/xcode.json
index 98bf99d..eb32dc6 100644
--- a/templates/xcode.json
+++ b/templates/xcode.json
@@ -1,7 +1,7 @@
 {
   "variables": {
     "home": "{{env `HOME`}}",
-    "mac_os_version": "big-sur",
+    "mac_os_version": "monterey",
     "xcode_version": "12.3"
   },
   "builders": [