diff --git a/include/gul14/SmallVector.h b/include/gul14/SmallVector.h
index 57cd2ec..7ff7b57 100644
--- a/include/gul14/SmallVector.h
+++ b/include/gul14/SmallVector.h
@@ -25,6 +25,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cstdint>
 #include <initializer_list>
 #include <iterator>
 #include <limits>