diff --git a/pkgs/misc/acpilight/default.nix b/pkgs/misc/acpilight/default.nix
index 20efe6342859..e36e41885008 100644
--- a/pkgs/misc/acpilight/default.nix
+++ b/pkgs/misc/acpilight/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, python36, udev, coreutils }:
+{ stdenv, fetchgit, python3, udev, coreutils }:
 
 stdenv.mkDerivation rec {
   pname = "acpilight";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "0kykrl71fb146vaq8207c3qp03h2djkn8hn6psryykk8gdzkv3xd";
   };
 
-  pyenv = python36.withPackages (pythonPackages: with pythonPackages; [
+  pyenv = python3.withPackages (pythonPackages: with pythonPackages; [
     ConfigArgParse
   ]);