diff --git a/phosphor-regulators/src/meson.build b/phosphor-regulators/src/meson.build
index b20e0bd..bfcacb1 100644
--- a/phosphor-regulators/src/meson.build
+++ b/phosphor-regulators/src/meson.build
@@ -15,6 +15,7 @@
     'id_map.cpp',
     'journal.cpp',
     'pmbus_utils.cpp',
+    'presence_service.cpp',
     'rail.cpp',
     'sensor_monitoring.cpp',
     'system.cpp',