diff --git a/include/jwt-cpp/traits/open-source-parsers-jsoncpp/traits.h b/include/jwt-cpp/traits/open-source-parsers-jsoncpp/traits.h
index 0f420a233..5442ba0f8 100644
--- a/include/jwt-cpp/traits/open-source-parsers-jsoncpp/traits.h
+++ b/include/jwt-cpp/traits/open-source-parsers-jsoncpp/traits.h
@@ -117,8 +117,11 @@ namespace jwt {
 			}
 
 			static bool parse(value_type& val, string_type str) {
-				Json::Reader reader;
-				return reader.parse(str, val);
+				Json::CharReaderBuilder builder;
+				const std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
+
+				return reader->parse(reinterpret_cast<const char*>(str.c_str()),
+									 reinterpret_cast<const char*>(str.c_str() + str.size()), &val, nullptr);
 			}
 
 			static string_type serialize(const value_type& val) {