diff --git a/csr.hpp b/csr.hpp
index aa47cf6..eb02df6 100644
--- a/csr.hpp
+++ b/csr.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include <sdbusplus/server/object.hpp>
 #include <string>
 #include <xyz/openbmc_project/Certs/CSR/server.hpp>