diff --git a/pkgs/development/ruby-modules/gem/default.nix b/pkgs/development/ruby-modules/gem/default.nix
index 649d33c46461..e5f9d045a5b4 100644
--- a/pkgs/development/ruby-modules/gem/default.nix
+++ b/pkgs/development/ruby-modules/gem/default.nix
@@ -18,7 +18,7 @@
 # Normal gem packages can be used outside of bundler; a binstub is created in
 # $out/bin.
 
-{ lib, fetchurl, fetchgit, makeWrapper, gitMinimal, darwin
+{ lib, fetchurl, fetchgit, makeWrapper, gitMinimal, libobjc
 , ruby, bundler
 } @ defs:
 
@@ -96,7 +96,7 @@ stdenv.mkDerivation ((builtins.removeAttrs attrs ["source"]) // {
 
   buildInputs = [
     ruby
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.libobjc ]
+  ] ++ lib.optionals stdenv.isDarwin [ libobjc ]
     ++ buildInputs;
 
   #name = builtins.trace (attrs.name or "no attr.name" ) "${namePrefix}${gemName}-${version}";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cad446e147fe..ec65625a41eb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14584,7 +14584,9 @@ with pkgs;
 
   inherit (ocamlPackages) reason;
 
-  buildRubyGem = callPackage ../development/ruby-modules/gem { };
+  buildRubyGem = callPackage ../development/ruby-modules/gem {
+    inherit (darwin) libobjc;
+  };
   defaultGemConfig = callPackage ../development/ruby-modules/gem-config {
     inherit (darwin) DarwinTools cctools;
     inherit (darwin.apple_sdk.frameworks) CoreServices;