diff --git a/AI/Skirmish/CircuitAI/src/circuit/util/MaskHandler.h b/AI/Skirmish/CircuitAI/src/circuit/util/MaskHandler.h
index 7bde5c3..970080e 100644
--- a/AI/Skirmish/CircuitAI/src/circuit/util/MaskHandler.h
+++ b/AI/Skirmish/CircuitAI/src/circuit/util/MaskHandler.h
@@ -8,6 +8,7 @@
 #ifndef SRC_CIRCUIT_UTIL_MASKHANDLER_H_
 #define SRC_CIRCUIT_UTIL_MASKHANDLER_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 #include <unordered_map>
diff --git a/rts/Lua/LuaHashString.h b/rts/Lua/LuaHashString.h
index 09e612a..c8cf5b5 100644
--- a/rts/Lua/LuaHashString.h
+++ b/rts/Lua/LuaHashString.h
@@ -3,6 +3,7 @@
 #ifndef LUA_HASH_STRING_H
 #define LUA_HASH_STRING_H
 
+#include <cstdint>
 #include <string>
 
 #include "LuaInclude.h"
diff --git a/rts/Sim/Misc/BuildingMaskMap.h b/rts/Sim/Misc/BuildingMaskMap.h
index 89351a3..b06b30f 100644
--- a/rts/Sim/Misc/BuildingMaskMap.h
+++ b/rts/Sim/Misc/BuildingMaskMap.h
@@ -3,6 +3,7 @@
 #ifndef BUILDINGMASKMAP_H
 #define BUILDINGMASKMAP_H
 
+#include <cstdint>
 #include <vector>
 
 #include "System/creg/creg_cond.h"
diff --git a/rts/System/CRC.h b/rts/System/CRC.h
index 1abde22..ee25b24 100644
--- a/rts/System/CRC.h
+++ b/rts/System/CRC.h
@@ -3,6 +3,7 @@
 #ifndef CRC_H
 #define CRC_H
 
+#include <cstdint>
 #include <string>
 
 /** @brief An updateable CRC-32 checksum. */
diff --git a/rts/System/Platform/Misc.h b/rts/System/Platform/Misc.h
index 37bb44f..e71e3d2 100644
--- a/rts/System/Platform/Misc.h
+++ b/rts/System/Platform/Misc.h
@@ -3,6 +3,7 @@
 #ifndef PLATFORM_MISC_H
 #define PLATFORM_MISC_H
 
+#include <cstdint>
 #include <string>
 #include <array>
 
diff --git a/rts/System/SpringHashSet.hpp b/rts/System/SpringHashSet.hpp
index 071a6c3..bb79364 100644
--- a/rts/System/SpringHashSet.hpp
+++ b/rts/System/SpringHashSet.hpp
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <cstdlib> // malloc
+#include <cstdint>
 #include <iterator>
 #include <utility>
 #include <algorithm>
diff --git a/rts/System/StringUtil.h b/rts/System/StringUtil.h
index e9ba35b..6a6b9d3 100644
--- a/rts/System/StringUtil.h
+++ b/rts/System/StringUtil.h
@@ -5,6 +5,7 @@
 
 #include <algorithm>
 #include <cstring>
+#include <cstdint>
 #include <string>
 #include <sstream>
 #include <vector>
diff --git a/rts/lib/luasocket/src/restrictions.cpp b/rts/lib/luasocket/src/restrictions.cpp
index c9cbbfb..4ed3a81 100644
--- a/rts/lib/luasocket/src/restrictions.cpp
+++ b/rts/lib/luasocket/src/restrictions.cpp
@@ -2,6 +2,7 @@
 
 #include "restrictions.h"
 
+#include <cstdint>
 #include <string>
 
 #include "System/SafeUtil.h"