diff --git a/webserv/utils/utils.cpp b/webserv/utils/utils.cpp
index 89efba3..7e115e7 100644
--- a/webserv/utils/utils.cpp
+++ b/webserv/utils/utils.cpp
@@ -4,6 +4,7 @@
 #include <webserv/socket/ASocket.hpp>
 
 #include <cstdint>
+#include <iomanip>
 #include <sstream>
 #include <stdexcept>
 #include <string>