diff --git a/src/numeric_types.h b/src/numeric_types.h
index 24fd203..f58e9ae 100644
--- a/src/numeric_types.h
+++ b/src/numeric_types.h
@@ -3,6 +3,8 @@
 #ifndef INVERTER_TOOLS_NUMERIC_TYPES_H
 #define INVERTER_TOOLS_NUMERIC_TYPES_H
 
+#include <cstdint>
+
 typedef uint8_t  u8;
 typedef uint16_t u16;
 typedef uint32_t u32;