diff --git a/source/utility/types.h b/source/utility/types.h
index 92ade945..ad6ade46 100644
--- a/source/utility/types.h
+++ b/source/utility/types.h
@@ -30,6 +30,7 @@
 #include <type_traits>
 #include <bitset>
 #include <cstdlib>
+#include <cstring>
 
 // platform specific 
 #ifdef _WIN32