diff --git a/src/spek-audio.h b/src/spek-audio.h
index 53e3cdf..d610d25 100644
--- a/src/spek-audio.h
+++ b/src/spek-audio.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint>
 #include <memory>
 #include <ostream>
 #include <string>