diff --git a/src/Util/util.cpp b/src/Util/util.cpp
index 1da99cc3..943a107a 100644
--- a/src/Util/util.cpp
+++ b/src/Util/util.cpp
@@ -9,6 +9,7 @@
  */
 
 #include <cassert>
+#include <chrono>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>