diff --git a/README.md b/README.md
index 2ad28d1..6e83ab0 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ for example:
 
 {
   environment.packages = [ pkgs.vim ];
-  system.stateVersion = "21.11";
+  system.stateVersion = "22.05";
 }
 ```
 
@@ -67,7 +67,7 @@ An alternative location is `~/.config/nixpkgs/config.nix` with the key
 
     {
       environment.packages = [ pkgs.vim ];
-      system.stateVersion = "21.11";
+      system.stateVersion = "22.05";
     };
 }
 ```
@@ -81,7 +81,7 @@ To enable `home-manager` you simply need to follow the instructions already prov
 
 1.  Add `home-manager` channel:
     ```
-    nix-channel --add https://github.com/rycee/home-manager/archive/release-21.11.tar.gz home-manager
+    nix-channel --add https://github.com/rycee/home-manager/archive/release-22.05.tar.gz home-manager
     nix-channel --update
     ```
 2.  Configure `home-manager`:
@@ -90,7 +90,7 @@ To enable `home-manager` you simply need to follow the instructions already prov
 
     {
       # Read nix-on-droid changelog before changing this value
-      system.stateVersion = "21.11";
+      system.stateVersion = "22.05";
 
       # insert nix-on-droid config
 
@@ -98,7 +98,7 @@ To enable `home-manager` you simply need to follow the instructions already prov
         { pkgs, ... }:
         {
           # Read home-manager changelog before changing this value
-          home.stateVersion = "21.11";
+          home.stateVersion = "22.05";
 
           # insert home-manager config
         };
@@ -170,7 +170,7 @@ Do not run `nix profile` because this will render your environment incompatible
   description = "nix-on-droid configuration";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-21.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-22.05";
     nix-on-droid.url = "github:t184256/nix-on-droid";
     nix-on-droid.inputs.nixpkgs.follows = "nixpkgs";
   };
@@ -193,8 +193,8 @@ Do not run `nix profile` because this will render your environment incompatible
   description = "nix-on-droid configuration";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-21.11";
-    home-manager.url = "github:nix-community/home-manager/release-21.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-22.05";
+    home-manager.url = "github:nix-community/home-manager/release-22.05";
     nix-on-droid.url = "github:t184256/nix-on-droid";
     nix-on-droid.inputs.nixpkgs.follows = "nixpkgs";
     nix-on-droid.inputs.home-manager.follows = "home-manager";
diff --git a/modules/build/initial-build.nix b/modules/build/initial-build.nix
index 9475f6c..599cc0b 100644
--- a/modules/build/initial-build.nix
+++ b/modules/build/initial-build.nix
@@ -13,13 +13,13 @@ with lib;
     build.channel = {
       nixpkgs = mkOption {
         type = types.str;
-        default = "https://nixos.org/channels/nixos-21.11";
+        default = "https://nixos.org/channels/nixos-22.05";
         description = "Channel URL for nixpkgs.";
       };
 
       nix-on-droid = mkOption {
         type = types.str;
-        default = "https://github.com/t184256/nix-on-droid/archive/release-21.11.tar.gz";
+        default = "https://github.com/t184256/nix-on-droid/archive/release-22.05.tar.gz";
         description = "Channel URL for nix-on-droid.";
       };
     };
diff --git a/modules/environment/login/default.nix b/modules/environment/login/default.nix
index 809bfb3..6cbf230 100644
--- a/modules/environment/login/default.nix
+++ b/modules/environment/login/default.nix
@@ -82,7 +82,7 @@ in
     environment.files = {
       inherit login loginInner;
 
-      prootStatic = "/nix/store/dapbgzbpl426jrhz4a2sdl096a8l98ad-proot-termux-aarch64-unknown-linux-android-unstable-2021-11-21";
+      prootStatic = "/nix/store/fmkdds5jp3ddx8mkb63fshkiiangw4ny-proot-termux-aarch64-unknown-linux-android-unstable-2021-11-21";
     };
 
   };
diff --git a/modules/environment/login/nix-on-droid.nix.default b/modules/environment/login/nix-on-droid.nix.default
index a02d814..c99f92e 100644
--- a/modules/environment/login/nix-on-droid.nix.default
+++ b/modules/environment/login/nix-on-droid.nix.default
@@ -28,17 +28,17 @@
   environment.etcBackupExtension = ".bak";
 
   # Read the changelog before changing this value
-  system.stateVersion = "21.11";
+  system.stateVersion = "22.05";
 
   # After installing home-manager channel like
-  #   nix-channel --add https://github.com/rycee/home-manager/archive/release-21.11.tar.gz home-manager
+  #   nix-channel --add https://github.com/rycee/home-manager/archive/release-22.05.tar.gz home-manager
   #   nix-channel --update
   # you can configure home-manager in here like
   #home-manager.config =
   #  { pkgs, lib, ... }:
   #  {
   #    # Read the changelog before changing this value
-  #    home.stateVersion = "21.11";
+  #    home.stateVersion = "22.05";
   #
   #    # Use the same overlays as the system packages
   #    nixpkgs = { inherit (config.nixpkgs) overlays; };
diff --git a/modules/version.nix b/modules/version.nix
index 10166f8..fefbc0d 100644
--- a/modules/version.nix
+++ b/modules/version.nix
@@ -11,7 +11,7 @@ with lib;
   options = {
 
     system.stateVersion = mkOption {
-      type = types.enum [ "19.09" "20.03" "20.09" "21.05" "21.11" ];
+      type = types.enum [ "19.09" "20.03" "20.09" "21.05" "21.11" "22.05" ];
       default = "19.09";
       description = ''
         It is occasionally necessary for nix-on-droid to change
diff --git a/overlays/lib/nixpkgs.nix b/overlays/lib/nixpkgs.nix
index 93dac63..7bfbbf7 100644
--- a/overlays/lib/nixpkgs.nix
+++ b/overlays/lib/nixpkgs.nix
@@ -3,12 +3,12 @@
 { super }:
 
 let
-  # head of nixos-21.11 as of 2021-12-01
+  # head of nixos-22.05 as of 2022-05-31
   pinnedPkgsSrc = super.fetchFromGitHub {
     owner = "NixOS";
     repo = "nixpkgs";
-    rev = "a640d8394f34714578f3e6335fc767d0755d78f9";
-    sha256 = "1dyyzgcmlhpsdb4ngiy8m0x10qmh0r56ky75r8ppvvh730m3lhfj";
+    rev = "a634c8f6c1fbf9b9730e01764999666f3436f10a";
+    sha256 = "1d40v43x972li5fg7jadxkj341li41mf2cl6vv7xi6j80rkq45q4";
   };
 in
 
diff --git a/pkgs/lib/load-nixpkgs.nix b/pkgs/lib/load-nixpkgs.nix
index e440b8f..422a099 100644
--- a/pkgs/lib/load-nixpkgs.nix
+++ b/pkgs/lib/load-nixpkgs.nix
@@ -6,11 +6,11 @@ let
     overlays = [ ];
   };
 
-  # head of nixos-21.11 as of 2021-12-01
+  # head of nixos-22.05 as of 2022-05-31
   # note: when updating nixpkgs, update store paths of proot-termux in modules/environment/login/default.nix
   pinnedPkgsSrc = builtins.fetchTarball {
-    url = "https://github.com/NixOS/nixpkgs/archive/a640d8394f34714578f3e6335fc767d0755d78f9.tar.gz";
-    sha256 = "1dyyzgcmlhpsdb4ngiy8m0x10qmh0r56ky75r8ppvvh730m3lhfj";
+    url = "https://github.com/NixOS/nixpkgs/archive/a634c8f6c1fbf9b9730e01764999666f3436f10a.tar.gz";
+    sha256 = "1d40v43x972li5fg7jadxkj341li41mf2cl6vv7xi6j80rkq45q4";
   };
 in
 
diff --git a/tests/on-device/config-flake-h-m.cfg.nix b/tests/on-device/config-flake-h-m.cfg.nix
index 2785fb0..a4da255 100644
--- a/tests/on-device/config-flake-h-m.cfg.nix
+++ b/tests/on-device/config-flake-h-m.cfg.nix
@@ -1,7 +1,7 @@
 { pkgs, config, ... }:
 
 {
-  system.stateVersion = "21.11";
+  system.stateVersion = "22.05";
 
   # no nixpkgs.overlays defined
   environment.packages = with pkgs; [ zsh ];
@@ -9,7 +9,7 @@
   home-manager.config =
     { pkgs, ... }:
     {
-      home.stateVersion = "21.11";
+      home.stateVersion = "22.05";
 
       nixpkgs.overlays = config.nixpkgs.overlays;
       home.packages = with pkgs; [ dash ];
diff --git a/tests/on-device/config-flake-h-m.flake.nix b/tests/on-device/config-flake-h-m.flake.nix
index a3bc9d2..6b060c7 100644
--- a/tests/on-device/config-flake-h-m.flake.nix
+++ b/tests/on-device/config-flake-h-m.flake.nix
@@ -2,8 +2,8 @@
   description = "nix-on-droid configuration";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-21.11";
-    home-manager.url = "github:nix-community/home-manager/release-21.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-22.05";
+    home-manager.url = "github:nix-community/home-manager/release-22.05";
     nix-on-droid.url = "<<FLAKE_URL>>";
     nix-on-droid.inputs.nixpkgs.follows = "nixpkgs";
     nix-on-droid.inputs.home-manager.follows = "home-manager";
diff --git a/tests/on-device/config-flake.nix b/tests/on-device/config-flake.nix
index 8dbd87e..ef616c6 100644
--- a/tests/on-device/config-flake.nix
+++ b/tests/on-device/config-flake.nix
@@ -2,7 +2,7 @@
   description = "nix-on-droid configuration";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-21.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-22.05";
     nix-on-droid.url = "<<FLAKE_URL>>";
     nix-on-droid.inputs.nixpkgs.follows = "nixpkgs";
   };
diff --git a/tests/on-device/config-h-m.bats b/tests/on-device/config-h-m.bats
index c7a065a..b60c769 100644
--- a/tests/on-device/config-h-m.bats
+++ b/tests/on-device/config-h-m.bats
@@ -21,7 +21,7 @@ teardown() {
   [[ ! -e ~/.config/example ]]
 
   # set up / build / activate the configuration
-  nix-channel --add https://github.com/rycee/home-manager/archive/release-21.11.tar.gz home-manager
+  nix-channel --add https://github.com/rycee/home-manager/archive/release-22.05.tar.gz home-manager
   nix-channel --update
   cp "$ON_DEVICE_TESTS_DIR/config-h-m.nix" ~/.config/nixpkgs/nix-on-droid.nix
   nix-on-droid switch
diff --git a/tests/on-device/config-h-m.nix b/tests/on-device/config-h-m.nix
index 3da5cf1..c68ae47 100644
--- a/tests/on-device/config-h-m.nix
+++ b/tests/on-device/config-h-m.nix
@@ -1,12 +1,12 @@
 { pkgs, config, ... }:
 
 {
-  system.stateVersion = "21.11";
+  system.stateVersion = "22.05";
 
   home-manager.config =
     { pkgs, lib, ... }:
     {
-      home.stateVersion = "21.11";
+      home.stateVersion = "22.05";
       nixpkgs = { inherit (config.nixpkgs) overlays; };
 
       # example config