diff --git a/pkgs/development/python-modules/slicedimage/default.nix b/pkgs/development/python-modules/slicedimage/default.nix
index 680bb0f6a5be..5287d25fb349 100644
--- a/pkgs/development/python-modules/slicedimage/default.nix
+++ b/pkgs/development/python-modules/slicedimage/default.nix
@@ -3,15 +3,12 @@
 , fetchFromGitHub
 , boto3
 , diskcache
-, enum34
 , packaging
-, pathlib
 , numpy
 , requests
 , scikit-image
 , six
 , pytestCheckHook
-, isPy27
 , tifffile
 }:
 
@@ -36,7 +33,7 @@ buildPythonPackage rec {
     scikit-image
     six
     tifffile
-  ] ++ lib.optionals isPy27 [ pathlib enum34 ];
+  ];
 
   nativeCheckInputs = [
     pytestCheckHook