diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index a447cd1a103..83ab5e0d86f 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -145,6 +145,7 @@ in
   grpc = attrs: {
     nativeBuildInputs = [ pkgconfig ];
     buildInputs = [ openssl ];
+    hardeningDisable = [ "format" ];
     NIX_CFLAGS_COMPILE = [ "-Wno-error=stringop-overflow" "-Wno-error=implicit-fallthrough" ];
   };