diff --git a/default.nix b/default.nix
index 74aa19c..21940f4 100644
--- a/default.nix
+++ b/default.nix
@@ -2,6 +2,7 @@
 
 let
   inherit (pkgs) callPackage;
+  inherit (pkgs.lib) optionalAttrs;
 
 in rec {
 
@@ -11,4 +12,8 @@ in rec {
 
   usrsctp = callPackage ./pkgs/usrsctp { };
 
+} // optionalAttrs (pkgs.system == "x86_64-linux") {
+
+  ryzenadj = callPackage ./pkgs/ryzenadj { };
+
 }
diff --git a/flake.nix b/flake.nix
index c8b13c1..4e54a2b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -32,6 +32,10 @@
           nextcloud-spreed-signaling
           usrsctp
           ;
+      } // prev.lib.optionalAttrs (prev.system == "x86_64-linux") {
+        inherit (localPkgs)
+          ryzenadj
+          ;
       };
 
   };
diff --git a/pkgs/ryzenadj/default.nix b/pkgs/ryzenadj/default.nix
new file mode 100644
index 0000000..d2c4173
--- /dev/null
+++ b/pkgs/ryzenadj/default.nix
@@ -0,0 +1,29 @@
+{ stdenv, lib, fetchFromGitHub, cmake, pciutils, ... }:
+
+let
+  src = fetchFromGitHub {
+    owner = "FlyGoat";
+    repo = "RyzenAdj";
+    rev = "a48d42addaad90832ab55b1ab56a0e2445338984";
+    sha256 = "sha256-rZPjmrloTMbzi7n1p6XrIaDWNgiU7hvY8XTnk2XMtrE=";
+  };
+  version = "unstable-2021-03-12";
+
+in stdenv.mkDerivation rec {
+  pname = "ryzenadj";
+  inherit version src;
+
+  nativeBuildInputs = [ cmake pciutils ];
+
+  installPhase = ''
+    install -D -m0755 ryzenadj $out/bin/ryzenadj
+  '';
+
+  meta = with lib; {
+    description = "Adjust power management settings for Ryzen mobile processors";
+    homepage = src.meta.homepage;
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ aw ];
+    platforms = [ "x86_64-linux" ];
+  };
+}