diff --git a/pkgs/development/python-modules/lxmf/default.nix b/pkgs/development/python-modules/lxmf/default.nix
index 81de08cf79c3..3ce65bf5f059 100644
--- a/pkgs/development/python-modules/lxmf/default.nix
+++ b/pkgs/development/python-modules/lxmf/default.nix
@@ -25,8 +25,6 @@ buildPythonPackage (finalAttrs: {
 
   build-system = [ setuptools ];
 
-  pythonRelaxDeps = [ "rns" ];
-
   buildInputs = lib.optionals (!propagateRns) [
     rns
   ];