diff --git a/src/utility.h b/src/utility.h
index dcd52c2c..e40228ac 100644
--- a/src/utility.h
+++ b/src/utility.h
@@ -6,6 +6,7 @@
 #include <memory>
 #include <mutex>
 #include <optional>
+#include <string>
 #include <string_view>
 #include <type_traits>
 #include <variant>