diff --git a/server/imserver/asynctaskmgr.cc b/server/imserver/asynctaskmgr.cc
index a6bd89d..b86736f 100644
--- a/server/imserver/asynctaskmgr.cc
+++ b/server/imserver/asynctaskmgr.cc
@@ -1,5 +1,7 @@
 #include "precompile.h"
 
+#include<random>
+
 #include <a8/timer.h>
 #include <a8/openssl.h>
 
diff --git a/server/imserver/playermgr.cc b/server/imserver/playermgr.cc
index a750e59..d206a22 100644
--- a/server/imserver/playermgr.cc
+++ b/server/imserver/playermgr.cc
@@ -1,5 +1,7 @@
 #include "precompile.h"
 
+#include<random>
+
 #include <a8/openssl.h>
 #include <a8/udplog.h>