diff --git a/pkgs/development/tools/hexio/default.nix b/pkgs/development/tools/hexio/default.nix
index 5b3fca815e6..0b4e474515a 100644
--- a/pkgs/development/tools/hexio/default.nix
+++ b/pkgs/development/tools/hexio/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, python, pcsclite, pth }:
+{ lib, stdenv, fetchFromGitHub, pcsclite, pth, python2 }:
 
 stdenv.mkDerivation rec {
   pname = "hexio";
@@ -11,8 +11,9 @@ stdenv.mkDerivation rec {
     repo = "hexio";
   };
 
-  propagatedBuildInputs = [ python ];
-  buildInputs = [ pcsclite pth ];
+  strictDeps = true;
+
+  buildInputs = [ pcsclite pth python2 ];
 
   patchPhase = ''
     substituteInPlace Makefile \