--- a/src/lib/utils/types.h	2017-10-13 08:08:04.055686756 +0000
+++ b/src/lib/utils/types.h	2017-10-13 08:08:46.043688922 +0000
@@ -12,6 +12,7 @@
 
 #include <botan/build.h> // IWYU pragma: export
 #include <botan/assert.h> // IWYU pragma: export
+#include <climits>
 #include <cstddef> // IWYU pragma: export
 #include <cstdint> // IWYU pragma: export
 #include <memory> // IWYU pragma: export
