diff --git a/lib/inc/drogon/CacheMap.h b/lib/inc/drogon/CacheMap.h
index 72957b79..9d3f445f 100755
--- a/lib/inc/drogon/CacheMap.h
+++ b/lib/inc/drogon/CacheMap.h
@@ -14,6 +14,7 @@
 
 #pragma once
 
+#include <assert.h>
 #include <map>
 #include <trantor/net/EventLoop.h>
 #include <mutex>
@@ -211,4 +212,4 @@ protected:
         }
     }
 };
-}
\ No newline at end of file
+}
diff --git a/trantor b/trantor
index 17d475c5..6cb562a6 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit 17d475c53e077a1d5d9e1c00d5e9418b6e3afb68
+Subproject commit 6cb562a6cced825dcd15732be0990c8a7e0ab112