diff --git a/svg-flatten/src/nopencv.hpp b/svg-flatten/src/nopencv.hpp
index bbc190b..7ea1146 100644
--- a/svg-flatten/src/nopencv.hpp
+++ b/svg-flatten/src/nopencv.hpp
@@ -22,6 +22,7 @@
 #include <string>
 #include <sstream>
 #include <cmath>
+#include <cstdint>
 #include <algorithm>
 #include <assert.h>
 
diff --git a/upstream/CavalierContours b/upstream/CavalierContours
index b955785..7a35376 160000
--- a/upstream/CavalierContours
+++ b/upstream/CavalierContours
@@ -1 +1 @@
-Subproject commit b955785cc3db9689704d6135cbb60177fab835bb
+Subproject commit 7a35376eb4c2d5f917d3e0564ea630c94137255e