diff --git a/pkgs/applications/misc/pdf-quench/default.nix b/pkgs/applications/misc/pdf-quench/default.nix
index d364074d445..c84c09e59a7 100644
--- a/pkgs/applications/misc/pdf-quench/default.nix
+++ b/pkgs/applications/misc/pdf-quench/default.nix
@@ -1,6 +1,6 @@
-{ stdenv, fetchFromGitHub, pkgs, pythonPackages, wrapGAppsHook}:
+{ stdenv, fetchFromGitHub, pkgs, python3, wrapGAppsHook}:
 
-pythonPackages.buildPythonApplication {
+python3.pkgs.buildPythonApplication {
   pname = "pdf-quench";
   version = "1.0.5";
 
@@ -18,7 +18,7 @@ pythonPackages.buildPythonApplication {
     goocanvas2
     poppler_gi
   ];
-  propagatedBuildInputs = with pythonPackages; [ pygobject3 pypdf2 ];
+  propagatedBuildInputs = with python3.pkgs; [ pygobject3 pypdf2 ];
 
   format = "other";
   doCheck = false;