diff --git a/pom.xml b/pom.xml
index ccb1c1ebd..bea6648fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,6 +72,7 @@
     <minimalJavaBuildVersion>8</minimalJavaBuildVersion>
     <!-- configuration bits for cutting a release candidate, must be overridden by components -->
     <!-- TODO How can we make project.build.outputTimestamp and changes.xml's release data the same? -->
+    <!-- project.build.outputTimestamp is managed by Maven plugins, see https://maven.apache.org/guides/mini/guide-reproducible-builds.html -->
     <project.build.outputTimestamp>2025-01-07T20:03:59Z</project.build.outputTimestamp>
     <commons.main.branch>master</commons.main.branch>
     <commons.release.branch>release</commons.release.branch>