diff --git a/svg-flatten/src/nopencv.cpp b/svg-flatten/src/nopencv.cpp
index e157ab5..d3fb863 100644
--- a/svg-flatten/src/nopencv.cpp
+++ b/svg-flatten/src/nopencv.cpp
@@ -1,4 +1,5 @@
 
+#include <cstdint>
 #include <iostream>
 #include <iomanip>
 #include <stack>
diff --git a/svg-flatten/src/out_dilater.cpp b/svg-flatten/src/out_dilater.cpp
index b8e55e8..dcb2ece 100644
--- a/svg-flatten/src/out_dilater.cpp
+++ b/svg-flatten/src/out_dilater.cpp
@@ -25,6 +25,7 @@
 #include <clipper.hpp>
 #include <svg_import_defs.h>
 #include <svg_geom.h>
+#include <cstdint>
 #include "polylinecombine.hpp"
 
 using namespace gerbolyze;
diff --git a/svg-flatten/src/out_flattener.cpp b/svg-flatten/src/out_flattener.cpp
index 398d055..9d939e7 100644
--- a/svg-flatten/src/out_flattener.cpp
+++ b/svg-flatten/src/out_flattener.cpp
@@ -24,6 +24,7 @@
 #include <gerbolyze.hpp>
 #include <svg_import_defs.h>
 #include <svg_geom.h>
+#include <cstdint>
 #include "polylinecombine.hpp"
 
 using namespace gerbolyze;