diff --git a/gen/xyz/openbmc_project/Control/FanSpeed/meson.build b/gen/xyz/openbmc_project/Control/FanSpeed/meson.build
index 1bebda7..237c964 100644
--- a/gen/xyz/openbmc_project/Control/FanSpeed/meson.build
+++ b/gen/xyz/openbmc_project/Control/FanSpeed/meson.build
@@ -3,6 +3,7 @@
     'xyz/openbmc_project/Control/FanSpeed__cpp'.underscorify(),
     input: [ '../../../../../yaml/xyz/openbmc_project/Control/FanSpeed.interface.yaml',  ],
     output: [ 'server.cpp', 'server.hpp', 'client.hpp',  ],
+    depend_files: sdbusplusplus_depfiles,
     command: [
         sdbuspp_gen_meson_prog, '--command', 'cpp',
         '--output', meson.current_build_dir(),