diff --git a/include/TachSensor.hpp b/include/TachSensor.hpp
index 8ab1083..94af80a 100644
--- a/include/TachSensor.hpp
+++ b/include/TachSensor.hpp
@@ -7,7 +7,12 @@
 
 #include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
+#include <memory>
+#include <optional>
 #include <sdbusplus/asio/object_server.hpp>
+#include <string>
+#include <utility>
+#include <vector>
 
 class PresenceSensor
 {