diff --git a/src/mimetype.h b/src/mimetype.h
index c09312e..3020416 100644
--- a/src/mimetype.h
+++ b/src/mimetype.h
@@ -14,6 +14,7 @@
 
 #include <string>
 #include <map>
+#include <cstdint>
 
 
 class MimeType {
diff --git a/src/sarge.h b/src/sarge.h
index ab24c72..7963d40 100644
--- a/src/sarge.h
+++ b/src/sarge.h
@@ -15,6 +15,7 @@
 #include <vector>
 #include <map>
 #include <memory>
+#include <cstdint>
 
 
 struct Argument {