diff --git a/include/GLSLANG/ShaderVars.h b/include/GLSLANG/ShaderVars.h
index e82c17e5b55..2545517bb43 100644
--- a/include/GLSLANG/ShaderVars.h
+++ b/include/GLSLANG/ShaderVars.h
@@ -15,6 +15,7 @@
 #include <cstdint>
 #include <string>
 #include <vector>
+#include <stdint.h>
 
 namespace sh
 {