diff --git a/pkgs/development/libraries/physics/geant4/datasets.nix b/pkgs/development/libraries/physics/geant4/datasets.nix
index e51a5937ddb..5646f4e02ba 100644
--- a/pkgs/development/libraries/physics/geant4/datasets.nix
+++ b/pkgs/development/libraries/physics/geant4/datasets.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, geant_version }:
+{ lib, stdenv, fetchurl, geant_version }:
 
 let
   mkDataset = { name, version, sha256, envvar }:
diff --git a/pkgs/development/libraries/physics/geant4/default.nix b/pkgs/development/libraries/physics/geant4/default.nix
index 27d67d9af0c..159c746fecd 100644
--- a/pkgs/development/libraries/physics/geant4/default.nix
+++ b/pkgs/development/libraries/physics/geant4/default.nix
@@ -107,7 +107,7 @@ stdenv.mkDerivation rec {
 
   passthru = {
     data = import ./datasets.nix {
-          inherit stdenv fetchurl;
+          inherit lib stdenv fetchurl;
           geant_version = version;
       };