diff --git a/pkgs/development/python-modules/pyghmi/default.nix b/pkgs/development/python-modules/pyghmi/default.nix
index 11fec2795b0f..31d8a4fce4c3 100644
--- a/pkgs/development/python-modules/pyghmi/default.nix
+++ b/pkgs/development/python-modules/pyghmi/default.nix
@@ -5,7 +5,6 @@
   setuptools,
   cryptography,
   python-dateutil,
-  six,
   pbr,
   coverage,
   oslotest,
@@ -36,8 +35,6 @@ buildPythonPackage rec {
   dependencies = [
     cryptography
     python-dateutil
-    six
-    pbr
   ];
 
   pythonImportsCheck = [ "pyghmi" ];