diff --git a/include/common/qvec.hh b/include/common/qvec.hh
index 3b9c51eb..70e55b74 100644
--- a/include/common/qvec.hh
+++ b/include/common/qvec.hh
@@ -22,6 +22,7 @@
 #include <initializer_list>
 #include <cassert>
 #include <cmath>
+#include <cstdint>
 #include <string>
 #include <algorithm>
 #include <array>