diff --git a/meson.build b/meson.build
index c40b9f3..fa857ad 100644
--- a/meson.build
+++ b/meson.build
@@ -81,6 +81,7 @@
     [
         'src/main.cpp',
         'src/metric.cpp',
+        'src/numeric_threshold.cpp',
         'src/persistent_json_storage.cpp',
         'src/report.cpp',
         'src/report_factory.cpp',