diff --git a/pkgs/development/python-modules/mhcflurry/default.nix b/pkgs/development/python-modules/mhcflurry/default.nix
index a83195d51686..9c2892719418 100644
--- a/pkgs/development/python-modules/mhcflurry/default.nix
+++ b/pkgs/development/python-modules/mhcflurry/default.nix
@@ -7,7 +7,6 @@
 , nose
 , pandas
 , pytestCheckHook
-, pythonRelaxDepsHook
 , pyyaml
 , scikit-learn
 , tensorflow
@@ -26,13 +25,6 @@ buildPythonPackage rec {
     hash = "sha256-VyPHcNlZYgNJZb2UBFX55x+nE0GnHixkcsiTNjDCju0=";
   };
 
-  nativeBuildInputs = [ pythonRelaxDepsHook ];
-
-  pythonRemoveDeps = [
-    # See https://github.com/openvax/mhcflurry/issues/216.
-    "np-utils"
-  ];
-
   # keras and tensorflow are not in the official setup.py requirements but are required for the CLI utilities to run.
   propagatedBuildInputs = [
     appdirs