diff --git a/phosphor-power-sequencer/src/meson.build b/phosphor-power-sequencer/src/meson.build
index 8f74c7e..4ea4b9c 100644
--- a/phosphor-power-sequencer/src/meson.build
+++ b/phosphor-power-sequencer/src/meson.build
@@ -8,6 +8,7 @@
     'power_control_main.cpp',
     'power_control.cpp',
     'power_interface.cpp',
+    'ucd90320_monitor.cpp',
     dependencies: [
         libgpiodcxx,
         phosphor_logging,