--- a/external/glslang/SPIRV/SpvBuilder.h
+++ b/external/glslang/SPIRV/SpvBuilder.h
@@ -61,6 +61,7 @@
 #include "spirv.hpp"
 #include "spvIR.h"

+#include <cstdint>
 #include <algorithm>
 #include <map>
 #include <stack>