diff --git a/lib/inc/drogon/RateLimiter.h b/lib/inc/drogon/RateLimiter.h
index 6940321c..2c5f039e 100644
--- a/lib/inc/drogon/RateLimiter.h
+++ b/lib/inc/drogon/RateLimiter.h
@@ -3,6 +3,7 @@
 #include <memory>
 #include <chrono>
 #include <mutex>
+#include <string>
 
 namespace drogon
 {
diff --git a/trantor b/trantor
index e13283c5..e8e38874 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit e13283c5f4eafdbfb73eaf0fdb818fde5f708d3a
+Subproject commit e8e3887435dcfb310263c588743be1b3746193be