diff --git a/tasks/bin/cross-ruby.rake b/tasks/bin/cross-ruby.rake
index 6230799..3a69f13 100644
--- a/tasks/bin/cross-ruby.rake
+++ b/tasks/bin/cross-ruby.rake
@@ -134,6 +134,8 @@ file "#{USER_HOME}/builds/#{MINGW_HOST}/#{RUBY_CC_VERSION}/Makefile" => ["#{USER
     "--target=#{MINGW_TARGET}",
     "--build=#{RUBY_BUILD}",
     '--enable-shared',
+    '--enable-static',
+    '--enable-install-static-library',
     '--disable-install-doc',
     '--with-ext='
   ]