diff --git a/include/wsrep/client_state.hpp b/include/wsrep/client_state.hpp
index 5c9caa2..2248b97 100644
--- a/include/wsrep/client_state.hpp
+++ b/include/wsrep/client_state.hpp
@@ -42,6 +42,8 @@
 #include "buffer.hpp"
 #include "thread.hpp"
 
+#include <chrono>
+
 namespace wsrep
 {
     class server_state;