diff --git a/nixos.nix b/nixos.nix
index 8abeb19..9721c1b 100644
--- a/nixos.nix
+++ b/nixos.nix
@@ -190,6 +190,7 @@ let systemInformation = import ./system/system-information.nix; in
 	};
 	hardware.enableAllFirmware = true;
 	hardware.cpu.intel.updateMicrocode = systemInformation.isIntel;
+	hardware.cpu.amd.updateMicrocode = systemInformation.isAmd;
 
 	# high-resolution display
 	hardware.video.hidpi.enable = systemInformation.isHiDPI;
diff --git a/system/system-information.nix b/system/system-information.nix
index 8436b29..814fb00 100644
--- a/system/system-information.nix
+++ b/system/system-information.nix
@@ -7,4 +7,5 @@
 
 	isHiDPI = true;
 	isIntel = true;
+	isAmd   = false;
 }