diff --git a/version.hpp b/version.hpp
index 85dccda..c7d2b03 100644
--- a/version.hpp
+++ b/version.hpp
@@ -7,6 +7,7 @@
 #include "xyz/openbmc_project/Software/Version/server.hpp"
 
 #include <sdbusplus/bus.hpp>
+#include <string>
 
 namespace openpower
 {