diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 4047c39ab1a4..19973c18bafd 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -102,6 +102,10 @@ in
 
   gobject-introspection = attrs: { buildInputs = [ gtk2 pcre pkgconfig ]; };
 
+  grpc = attrs: {
+    buildInputs = [ openssl pkgconfig ];
+  };
+
   hitimes = attrs: {
     buildInputs =
       stdenv.lib.optionals stdenv.isDarwin