diff --git a/hosts/miku.nix b/hosts/miku.nix
index d510858..3e57411 100644
--- a/hosts/miku.nix
+++ b/hosts/miku.nix
@@ -34,7 +34,7 @@ in mkHost config {
     gajim-mainwindow
     virt-manager unstable.qemu scream
     #gamemode # Custom package
-    key-mapper # Custom package
+    #key-mapper # Custom package
     replaysorcery # Custom package
     #evdev-proxy # Custom package
     vfio-isolate # Custom Package
@@ -104,7 +104,7 @@ in mkHost config {
         WriteResolvConf=false
       '';
       udev = {
-        packages = with pkgs; [ key-mapper ];
+        #packages = with pkgs; [ key-mapper ];
         extraRules = ''
           KERNEL=="uinput", GROUP="input", MODE="0660"
         '';
@@ -125,7 +125,7 @@ in mkHost config {
 
     nix.package = pkgs.nixUnstable;
     nix.extraOptions = ''
-      experimental-options = nix-command flakes ca-references
+      experimental-features = nix-command flakes ca-references
     '';
     
     # TODO: Move into modules
@@ -148,17 +148,17 @@ in mkHost config {
           Restart = "always";
         };
       };
-      key-mapper = {
-        description = "A tool to change the mapping of your input device buttons";
-        wantedBy = [ "default.target" ];
-        serviceConfig = {
-          Type = "simple";
-          ExecStart = "${pkgs.key-mapper}/bin/key-mapper-service";
-          Restart = "always";
-          # NOTE: The Tartarus may not be connected, so don't fail if we cannot set the preset
-          ExecPostStart = "${pkgs.key-mapper}/bin/key-mapper --command start --preset NOOP --device \"Razer Razer Tartarus V2\"; exit 0";
-        };
-      };
+     #key-mapper = {
+     #  description = "A tool to change the mapping of your input device buttons";
+     #  wantedBy = [ "default.target" ];
+     #  serviceConfig = {
+     #    Type = "simple";
+     #    ExecStart = "${pkgs.key-mapper}/bin/key-mapper-service";
+     #    Restart = "always";
+     #    # NOTE: The Tartarus may not be connected, so don't fail if we cannot set the preset
+     #    ExecPostStart = "${pkgs.key-mapper}/bin/key-mapper --command start --preset NOOP --device \"Razer Razer Tartarus V2\"; exit 0";
+     #  };
+     #};
       replaysorcery = {
         description = "An open-source, instant-replay solution for Linux";
         #wantedBy = [ "default.target" ];
diff --git a/overlays/nur.nix b/overlays/nur.nix
index 18ef4cc..0938141 100644
--- a/overlays/nur.nix
+++ b/overlays/nur.nix
@@ -3,7 +3,7 @@ pkgs: final: prev:
 {
   nur = import (builtins.fetchTarball {
     url = "https://github.com/nix-community/NUR/archive/master.tar.gz";
-    sha256 = "19s8a5pfp8yms0kx5lb74al5yfia2smn46dndsl43q528719pnp4";
+    sha256 = "0fz7zdfvjfjzg46w7khvwr5jhpd9w8yx0cdd9gnmbkzxhbspbmwq";
   }) {
     inherit pkgs;
   };
diff --git a/packages/default.nix b/packages/default.nix
index 1383523..656663c 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -12,7 +12,7 @@ let
   };
   wrapInSandbox = pkgs.callPackage ./sandbox.nix {};
 in { 
-  key-mapper = pkgs.callPackage ./tools/games/key-mapper {};
+  #key-mapper = pkgs.callPackage ./tools/games/key-mapper {};
   vfio-isolate = pkgs.callPackage ./tools/virtualisation/vfio-isolate {};
   mopidy-funkwhale = pkgs.callPackage ./applications/audio/mopidy/funkwhale.nix {};
   # Not as clean as I hoped, but it works
diff --git a/packages/misc/video/anime4k/default.nix b/packages/misc/video/anime4k/default.nix
index aceba8f..5d99ac2 100644
--- a/packages/misc/video/anime4k/default.nix
+++ b/packages/misc/video/anime4k/default.nix
@@ -1,14 +1,16 @@
-{ stdenv, lib }:
+{ stdenv, lib, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "Anime4k";
-  version = "4.0.0-RC";
+  version = "4.0.1";
 
-  src = builtins.fetchGit {
-    url = "https://github.com/bloc97/Anime4K.git";
-    ref = "cb56502ed429a5a3e48ed62c5245d6445a209c7c";
+  src = fetchFromGitHub {
+    owner = "bloc97";
+    repo = "Anime4k";
+    rev = "v${version}";
+    sha256 = "1gc1ka9i7xzxq58175q5svhvp8vr27hy477r4z4nkhp9q1cqj19r";
   };
-
+  
   installPhase = ''
     find ./glsl/ -type f -iname '*.glsl' -exec install -Dm 644 {} -t $out/usr/share/shaders/ \;
   '';
diff --git a/packages/tools/games/key-mapper/default.nix b/packages/tools/games/key-mapper/default.nix
index 236c4dd..6b243ef 100644
--- a/packages/tools/games/key-mapper/default.nix
+++ b/packages/tools/games/key-mapper/default.nix
@@ -4,10 +4,12 @@
 , gtk3, gobject-introspection, git, gnome
 , wrapGAppsHook
 , makeDesktopItem
+, fetchFromGitHub
 }:
 
 python3Packages.buildPythonApplication rec {
   pname = "key-mapper";
+  # TODO: Update to 1.2.1
   version = "1.0.0";
 
   buildInputs = [ gobject-introspection gtk3 gnome.adwaita-icon-theme ];
@@ -16,9 +18,11 @@ python3Packages.buildPythonApplication rec {
 
   propagatedBuildInputs = with python3.pkgs; [ setuptools pydbus evdev pygobject3 ];
 
-  src = builtins.fetchGit {
-    url = "https://github.com/sezanzeb/key-mapper.git";
-    ref = version;
+  src = fetchFromGitHub {
+    owner = "sezanzeb";
+    repo = "key-mapper";
+    rev = version;
+    sha256 = "07dgp4vays1w4chhd22vlp9bxc49lcgzkvmjqgbr00m3781yjsf7";
   };
 
   doCheck = false;