diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 37c2b71be05..d0b4e5c727f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -837,7 +837,7 @@ in
 
   dgsh = callPackage ../shells/dgsh { };
 
-  dkimpy = with pythonPackages; toPythonApplication dkimpy;
+  dkimpy = with python3Packages; toPythonApplication dkimpy;
 
   dpt-rp1-py = callPackage ../tools/misc/dpt-rp1-py { };