diff --git a/ext/fiddle/fiddle.gemspec b/ext/fiddle/fiddle.gemspec
index 850b12d0b8..a9514399f0 100644
--- a/ext/fiddle/fiddle.gemspec
+++ b/ext/fiddle/fiddle.gemspec
@@ -65,4 +65,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rake-compiler"
+
+  spec.metadata["msys2_mingw_dependencies"] = "libffi"
 end