diff --git a/external/sources/RakNet/include/NativeFeatureIncludesOverrides.h b/external/sources/RakNet/include/NativeFeatureIncludesOverrides.h
index 345d5ffa8e..47365ad43f 100644
--- a/external/sources/RakNet/include/NativeFeatureIncludesOverrides.h
+++ b/external/sources/RakNet/include/NativeFeatureIncludesOverrides.h
@@ -14,6 +14,8 @@
 #ifndef __NATIVE_FEATURE_INCLDUES_OVERRIDES_H
 #define __NATIVE_FEATURE_INCLDUES_OVERRIDES_H
 
-//#define LIBCAT_SECURITY 1
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
 
 #endif
diff --git a/external/sources/RakNet/include/RakNetDefinesOverrides.h b/external/sources/RakNet/include/RakNetDefinesOverrides.h
index 00ad529d7e..67d971b17f 100644
--- a/external/sources/RakNet/include/RakNetDefinesOverrides.h
+++ b/external/sources/RakNet/include/RakNetDefinesOverrides.h
@@ -9,4 +9,7 @@
  */
 
 // USER EDITABLE FILE
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
 
diff --git a/external/sources/RakNet/src/HTTPConnection2.cpp b/external/sources/RakNet/src/HTTPConnection2.cpp
index 95325dbb27..b4cc9823e0 100644
--- a/external/sources/RakNet/src/HTTPConnection2.cpp
+++ b/external/sources/RakNet/src/HTTPConnection2.cpp
@@ -13,6 +13,7 @@
 
 #include "HTTPConnection2.h"
 #include "TCPInterface.h"
+#include <cstdlib>
 
 using namespace RakNet;