diff --git a/src/utils/serialize.hpp b/src/utils/serialize.hpp
index 977148e..eed2b53 100644
--- a/src/utils/serialize.hpp
+++ b/src/utils/serialize.hpp
@@ -17,6 +17,17 @@ namespace nl = nlohmann;
 
 namespace xv
 {
+#ifdef _WIN32
+    template <class... T>
+    void serialize(nl::json& j, const std::optional<std::variant<T...>>& p, const std::string& name)
+    {
+        if (p.has_value())
+        {
+            std::visit([&](const auto& arg) { j[name] = arg; }, p.value());
+        }
+    }
+#endif
+
     template <class T>
     void serialize(nl::json& j, const std::optional<T>& p, const std::string& name)
     {