diff --git a/pkgs/development/python-modules/inflect/default.nix b/pkgs/development/python-modules/inflect/default.nix
index 999ab17472e..2b856b35f7c 100644
--- a/pkgs/development/python-modules/inflect/default.nix
+++ b/pkgs/development/python-modules/inflect/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, setuptools_scm, nose, six }:
+{ buildPythonPackage, fetchPypi, setuptools_scm, nose, six, importlib-metadata }:
 
 buildPythonPackage rec {
   pname = "inflect";
@@ -9,7 +9,7 @@ buildPythonPackage rec {
     sha256 = "ee7c9b7c3376d06828b205460afb3c447b5d25dd653171db249a238f3fc2c18a";
   };
 
-  buildInputs = [ setuptools_scm ];
+  nativeBuildInputs = [ setuptools_scm ];
+  propagatedBuildInputs = [ six importlib-metadata ];
   checkInputs = [ nose ];
-  propagatedBuildInputs = [ six ];
 }