diff --git a/application/third_party/fbx/src/fbxdocument.h b/application/third_party/fbx/src/fbxdocument.h
index 94f5016c9..3d55b8124 100644
--- a/application/third_party/fbx/src/fbxdocument.h
+++ b/application/third_party/fbx/src/fbxdocument.h
@@ -1,6 +1,7 @@
 #ifndef FBXDOCUMENT_H
 #define FBXDOCUMENT_H
 
+#include <cstdint>
 #include "fbxnode.h"
 
 namespace fbx {
diff --git a/application/third_party/fbx/src/fbxnode.h b/application/third_party/fbx/src/fbxnode.h
index 626cd3caa..9f1054981 100644
--- a/application/third_party/fbx/src/fbxnode.h
+++ b/application/third_party/fbx/src/fbxnode.h
@@ -1,6 +1,7 @@
 #ifndef FBXNODE_H
 #define FBXNODE_H
 
+#include <cstdint>
 #include "fbxproperty.h"
 
 namespace fbx {
diff --git a/application/third_party/fbx/src/fbxproperty.h b/application/third_party/fbx/src/fbxproperty.h
index e5040272d..6a1d67c95 100644
--- a/application/third_party/fbx/src/fbxproperty.h
+++ b/application/third_party/fbx/src/fbxproperty.h
@@ -1,6 +1,7 @@
 #ifndef FBXPROPERTY_H
 #define FBXPROPERTY_H
 
+#include <cstdint>
 #include <memory>
 #include <iostream>
 #include <vector>
diff --git a/dust3d/base/ds3_file.h b/dust3d/base/ds3_file.h
index 037407dc5..a450b1928 100644
--- a/dust3d/base/ds3_file.h
+++ b/dust3d/base/ds3_file.h
@@ -23,6 +23,7 @@
 #ifndef DUST3D_BASE_DS3_FILE_H_
 #define DUST3D_BASE_DS3_FILE_H_
 
+#include <cstdint>
 #include <map>
 #include <string>
 #include <vector>
diff --git a/dust3d/mesh/solid_mesh_boolean_operation.h b/dust3d/mesh/solid_mesh_boolean_operation.h
index e3b53e725..ac7c86f5f 100644
--- a/dust3d/mesh/solid_mesh_boolean_operation.h
+++ b/dust3d/mesh/solid_mesh_boolean_operation.h
@@ -26,6 +26,7 @@
 #include <dust3d/base/position_key.h>
 #include <dust3d/base/vector3.h>
 #include <dust3d/mesh/solid_mesh.h>
+#include <cstdint>
 #include <map>
 #include <unordered_map>
 #include <unordered_set>