diff --git a/ZRColaWS/appcomponent.hpp b/ZRColaWS/appcomponent.hpp
index f678d29..889a612 100644
--- a/ZRColaWS/appcomponent.hpp
+++ b/ZRColaWS/appcomponent.hpp
@@ -38,7 +38,11 @@ public:
     }());
 
     OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::data::mapping::ObjectMapper>, apiObjectMapper)([] {
-        return oatpp::parser::json::mapping::ObjectMapper::createShared();
+        auto serializerConfig = oatpp::parser::json::mapping::Serializer::Config::createShared();
+        serializerConfig->escapeFlags &= ~oatpp::parser::json::Utils::FLAG_ESCAPE_UTF8CHAR;
+        return oatpp::parser::json::mapping::ObjectMapper::createShared(
+            serializerConfig,
+            oatpp::parser::json::mapping::Deserializer::Config::createShared());
     }());
 
     OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::network::Server>, server)([] {
diff --git a/lib/oatpp b/lib/oatpp
index bbe455a..66e94ea 160000
--- a/lib/oatpp
+++ b/lib/oatpp
@@ -1 +1 @@
-Subproject commit bbe455af60b8f292ed90f84bd02cac1b98c2e232
+Subproject commit 66e94ea869044b1e8c1bfe78bf2f29fb31605334