diff --git a/pkgs/development/python-modules/uncompyle6/default.nix b/pkgs/development/python-modules/uncompyle6/default.nix
index c539946f356e..ec2bcae39a03 100644
--- a/pkgs/development/python-modules/uncompyle6/default.nix
+++ b/pkgs/development/python-modules/uncompyle6/default.nix
@@ -29,6 +29,8 @@ buildPythonPackage rec {
     xdis
   ];
 
+  pythonRelaxDeps = [ "spark-parser" ];
+
   nativeCheckInputs = [
     nose
     pytestCheckHook