diff --git a/openssl.gemspec b/openssl.gemspec
index 821b6c7f1..c698be429 100644
--- a/openssl.gemspec
+++ b/openssl.gemspec
@@ -21,4 +21,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake-compiler"
   spec.add_development_dependency "test-unit", "~> 3.0"
   spec.add_development_dependency "rdoc"
+
+  spec.metadata['msys2_mingw_dependencies'] = 'openssl'
 end