diff --git a/pkgs/tools/system/ps_mem/default.nix b/pkgs/tools/system/ps_mem/default.nix
index 073a0921f98..8408ed5e8d1 100644
--- a/pkgs/tools/system/ps_mem/default.nix
+++ b/pkgs/tools/system/ps_mem/default.nix
@@ -1,10 +1,8 @@
-{ lib, python2Packages, fetchFromGitHub }:
+{ lib, python3Packages, fetchFromGitHub }:
 
-let
-  version = "3.13";
+python3Packages.buildPythonApplication rec {
   pname = "ps_mem";
-in python2Packages.buildPythonApplication {
-  name = "${pname}-${version}";
+  version = "3.13";
 
   src = fetchFromGitHub {
     owner = "pixelb";