diff --git a/pkgs/development/interpreters/ruby/bundler-env/default.nix b/pkgs/development/interpreters/ruby/bundler-env/default.nix
index ea4e141b8fe5..b51a6d49bd3d 100644
--- a/pkgs/development/interpreters/ruby/bundler-env/default.nix
+++ b/pkgs/development/interpreters/ruby/bundler-env/default.nix
@@ -11,6 +11,7 @@
 , postInstall ? null
 , documentation ? false
 , meta ? {}
+, ...
 }@args:
 
 let
@@ -253,7 +254,7 @@ let
       ruby
       bundler
       git
-    ];
+    ] ++ args.buildInputs or [];
 
     phases = [ "installPhase" "fixupPhase" ];