diff --git a/phosphor-regulators/src/meson.build b/phosphor-regulators/src/meson.build
index 6f067b5..2012855 100644
--- a/phosphor-regulators/src/meson.build
+++ b/phosphor-regulators/src/meson.build
@@ -15,6 +15,7 @@
     'rail.cpp',
     'sensor_monitoring.cpp',
     'system.cpp',
+    'temporary_file.cpp',
 
     'actions/if_action.cpp',
     'actions/i2c_compare_bit_action.cpp',