diff --git a/pkgs/development/python-modules/grandalf/default.nix b/pkgs/development/python-modules/grandalf/default.nix
index c447d061e4a2..154fec79d2e5 100644
--- a/pkgs/development/python-modules/grandalf/default.nix
+++ b/pkgs/development/python-modules/grandalf/default.nix
@@ -3,7 +3,6 @@
   buildPythonPackage,
   fetchFromGitHub,
   pyparsing,
-  future,
   pytestCheckHook,
   pythonOlder,
 }:
@@ -24,7 +23,6 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     pyparsing
-    future
   ];
 
   nativeCheckInputs = [ pytestCheckHook ];